Is the ability to see really a blessing or a curse?

Suppose there was a power or a set of glasses that could tell you if your partner was having an affair or if he was flirting with someone else without your knowledge? What would it be like? In Korea, there are glasses that show a red line on the top of the person's head when you look at them, which shows how many people the person has had close relationships with. But who made these glasses and for what purpose? Will these glasses benefit people or bring a curse to their lives? In the morning, Shinhan Hyeop was woken up by the loud sound of a car horn. Shin opened the window to look outside. A neighbor girl was walking to school on the street. A man sitting in a car next to her was asking her to get in the car. However, the girl ignored him and left. They were uncles and nephews. Uncle Hanjik works for the police. And nephew Kang Seona goes to school. But for some reason, Seona doesn't like her uncle at all. Sin notices that a red line is visible on the girl's head. And many red lines are visible on the head of Han sitting in the car. After they leave, Sin looks at the building in front of him. A girl was standing there. He could also see many red lines on this girl's head. The girl also waves at Shin. However, Shin had a social phobia. He couldn't mix with any people. So he slammed the window shut without giving the girl any answer. Now the question is, what is this red line on his head? Actually, it is a strange power of Sin. He was born with a special power. When he looks at someone, he can understand how many people that person has a close relationship with. And each of these red lines is a signal of a relationship. He has named them S lines. The three meanings of which are social, sex, and secret. If someone has five S lines on their head, then they are close to five people. Again, if it is seen that the S lines of two people are connected, then it should be understood that there is a relationship between these two. However, Shin considers this ability of his to be a curse. Because of this ability, he had to make a lot of sacrifices in his childhood. When he was a child, he could see several S lines on his father's head. In addition to his mother, his father's S line was connected to his aunt. At that time, Shin did not understand the matter of relationships. So he drew this thing in his drawing book. One day, Sin's mother saw this book. That way, Sin's mother could understand. Sin is a special child. So the meaning of that drawing can be understood. For this, he kills Sin's father and runs away himself. That is, Sin has to become an orphan because of this strange power. He has not been able to overcome this trauma to date. He has attempted suicide many times to escape this cursed life.

He jumped from a high building. He cut his arm vein. But it was no use. In addition to seeing the Ace Line, Sean also had healing powers. No matter how serious his wound was, it would heal within a few moments. It was as if he survived every time he committed suicide. So at one point, he decided. He would leave after seeing the end of it. He was trying to find out. What is the secret of this strange power? And whether anyone else besides him has this power. Sean was thinking about these things. Then the doorbell rang at his door. He looked through the crack in the door. The girl from the next building was standing in front of his house. Even after calling him many times, Sean did not open the door. Then the girl said from outside that she was new to the next building. I have no friends here. So I came to make friends with you. The girl also brought fruits for Shin. When Shin did not open the door, the girl left the bag of fruits in front of the door. When the girl left, Shin brought the fruits home and started eating them. Meanwhile, Seona went to school and fell into the wrath of her classmates. These girls bullied her a lot. The leader of this bullying group, Kim Hae, regularly demanded money from her. If she did not give the money, she would beat her. Even today, Seona is beaten a lot without any reason. Although her uncle Han is a police officer, she still does not tell her uncle anything. The reason is already mentioned. Seona does not like Han. On the other hand, Han went to investigate a murder case at that time. During the investigation, a man wearing a helmet emerged as a suspect. Last night, a man wearing a helmet entered the building. Han decided to detect that man this time. However, this murder took place in the building around Shin. Since Shin doesn't go out, he didn't know anything about the murder. Shin noticed at night that the neighbor girl had left fruit for him today, too. He was watching TV while eating the fruit. At that time, he found out that there had been a murder here. The news showed a man wearing a helmet entering the apartment behind the reporter. Shin noticed that the man had only an S line on his head. It seemed strange to him that there was only an S line in this era. That night, Shin heard the sound of a bike and looked out the window. Then he saw a man wearing a helmet entering the neighbor girl's building. This man also had an S line on his head. Shin suspected that this was the murderer. So he quickly tried to call the police. His phone was out of charge. Somehow, he charged the phone for a couple of minutes, turned it on, and called the police emergency number. By then, the man had entered the neighbor girl's room. The inside of the house was also clearly visible from Sin's window. Sin saw the police talking about the man wearing the helmet. The girl and the man were getting intimate with each other. The man had an S line on his head all this time. But after the two became intimate, another S line emerged from his head and connected to the girl. Therefore, Sin realized his mistake and hung up the phone. Meanwhile, the next day, Han returned home and saw that Seona had not gone to school. When Han asked her about this, Seona asked for some money without answering. Han was quite surprised when she asked for some more money even after Han gave her the money. At this time, he noticed the injury marks on Seona's hands and jaw and asked about them. However, Seona went to her room without saying anything and locked the door. Han was standing on the balcony, smoking a cigarette in frustration. Then his colleague called and said, last night a girl had called and said about a suspicious man wearing a helmet. They haven't leaked it yet. The police suspect the man wearing a helmet as the murderer. So how did that girl know about it? They tracked the girl's location and found out. The girl lives in the building next to Han's. Maneshin and Han were neighbors, after all. So Han went straight to Shin's house and knocked. Shin could see Han through the crack in the door. There were countless S lines on Han's head. He had never seen so many S lines on anyone else's head. So Han was standing outside. At that time, the man from the flat above Shin was coming down.

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He tells Han that he is not interested in calling this girl. She never opens the door except to deliver parcels. However, Han calls Shin for some more time and says that he is a policeman. When he comes to talk about the phone call last night, Shin opens the door slightly and says that a man wearing a helmet entered the building next door last night. He suspected that the man was a murderer, but later he understood that they had called the couple by mistake. He says he is sorry. Shin was still a teenager at that time. He is supposed to be at school now, but he is at home. Han asks him about it, but Shin closes the door without answering. That night, the man wearing a helmet came to Shin's building. Shin hears the noise and looks out through the crack in the door. The man was leaving. Suddenly, he stops and turns back, and looks at the crack as if he understands. Shin is looking at him. This time, Sin was quite scared. But fortunately, the man did not harm him. Meanwhile, Han and his colleague Dongsik were discussing the Dongsik case. Dongsik said that the victim's ex-boyfriend, Jingmin, lives in a nearby building. It was from this building that Sin called the police. Hearing this, Han wanted to see the photo of Jeongmin. The Jeongmin in the photo was actually the man Han met in front of Ajinshin's apartment. That is, he lived on the floor above Jeongmin. This time, Han's suspicions about Jeongmin increased. They were going out to inquire there. Then Han got a call. So he asked Dongsik to go there alone. And he himself went to a hospital. His father was admitted there. His father had a problem with his head. The hospital reported that his father could not be found. Han goes straight to the hospital roof and sees his father standing there holding the cornice. Strange but true. Han wanted his father to jump off the roof and die. But before that, the staff came and caught him and brought him down. Han was quite disappointed. Meanwhile, Dongsik went to Jeongmin's apartment and found the door open. So he went inside and started searching. Seeing various things there, including ropes and helmets, Don became suspicious. So he quickly called Han to inform him about this. However, Jeongmin had returned by then. He tied Dongsik up. Then he put on the helmet and his glasses and left. Shin noticed that he still had an S line on his head today. However, when he met the girl the other day, he had two S lines. A person's S line only decreases when the other person dies. Shin is convinced. He is a murderer. Jeongmin goes straight to Sin's neighbor's apartment. Shin was suspicious. The girl is in danger. So he goes out with a knife to save the girl. But since he has been out for a long time, he can't even walk properly. He feels strange in the outside environment. At one point, he faints. Although he tries to be normal again after a while and goes to the girl's apartment, he sees Jeongmin trying to strangle the girl. Sin goes there and stands there, but her body is shaking, so Jeongmin, without any fear, takes the knife from Sin's hand and puts it in her stomach and goes to the girl and tries to kill her again. Meanwhile, Han had reached there by then. Seeing a black sunflower outside, he picked it up and entered Sin's building. While going to Jeongmin's apartment, he saw Sin's door open and entered. Sin had been researching the entire room about the S line he had seen. Han was quite surprised to see all this. At that time, he glanced at Sin's window. The neighbor's house was visible through the window. Han saw that Jeongmin was killing the girl. At that moment, Sin stepped forward and stabbed Jeongmin in the leg, saving the girl.

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Then, when Jeomin gets up and tries to kill Sin, Han shoots him from a distance. Before dying, Jeongmin says one thing: the red line is disappearing. Shin understands that Jeongmin can see the S line like him. He thinks that the glasses that Jeongmin had on have the power to see the S line because during the riot, Jeongmin's glasses fell out of his eyes once, and he became restless. However, when Jeongmin's body was being taken away, Shin noticed that the glasses were not on his eyes. After a while, when the situation is normal, he returns Hanshin's sunglasses. Which were left outside. At that time, Seona comes there and asks Sen, "Why are you wearing sunglasses at night?" Actually, Sen used to wear sunglasses so that he couldn't see the S line on anyone's head. So, Han asks Seona after returning home. How does she know Shin? Seona says that they used to study together in middle school. She also tells Han about Shin's parents. Meanwhile, Shin was thinking that he had saved someone's life today through the S-line that he considered a curse. He was feeling quite satisfied mentally. At that time, Shin received a message from an unknown number. The message read, "I can see S-lines like you, so if you want to talk, I'll go to Arc High School. Shin thought a lot about this matter and finally decided to return to normal life. Shin's house was always messy. He put cupboard boards on each window so that even sunlight wouldn't come into the house. He took off all the boards and cleaned the house. Meanwhile, Seona went to school and saw that Haeng had found a new option to bully her. They took this opportunity to break Seona's locker because she didn't come to school the other day. There was a love letter inside her locker. Today, Hae Young started teasing her about it. This time, Seona couldn't stand it. She jumped on Hae Young and started hitting her randomly. She got beaten up a lot herself. At that time, Madam Liguojin came to the class and stopped them. Guojin took Seona to the office and explained that it was not right to be so violent. Seona didn't like Madam's lecture. So she was going home on leave today. At that time, she saw a pair of glasses in her empty locker. Curious, she took the glasses home. Meanwhile, Han and Dongsik were discussing Jeongmin's case. They couldn't understand what the motive was for Jeomin's murder. That's why Han went to Xiumin's apartment again and checked his room. At this time, he saw many red lines on the wall. He couldn't understand why Xiumin had drawn them. So he returned home. Seona was trying on her glasses at that time. As soon as she put on her glasses and stood in front of the mirror, she was shocked. A red line could be seen above her head. But she couldn't even touch it with her hand. She realized that this line was invisible. When she heard Han coming outside, she came out. And when she saw the numerous red lines on Han's head, she screamed and ran outside in panic. Even when she came outside, she could see red lines on almost everyone's head. Some had fewer on their heads, and some had more. After a while, she understood. These lines could tell who had a close relationship with whom. Now that the panic had passed, she found this matter quite interesting. The next day, he wears his glasses and goes to school. Because of the glasses, he can understand who his classmates are in relationships with. At this time, he also sees Hae Young. Two S lines come out of his head. One of the S lines is connected to someone.

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He went ahead and saw. It was their Korean language teacher, Seong Jin, that is, Haeng, who had an illicit relationship with one of the teachers. So then he came to class. Ma'am introduced the new student in the class today. And the new student was Sin. He had re-enrolled in school. So when the class ended, Haeng went to the roof and started bullying Seona again. He slapped Seona's glasses once, and they fell off. But Seona didn't get scared and picked them up. Then, when Haeng was about to slap her a second time, Seona held her hand and said that she wouldn't give her any more money from today on. When Haeng tried to force himself on her, Sin came and stopped him. This time, a fight broke out between Haeng and Sin. When Haeyoung threatened to throw Sin off the cliff, Sin grabbed his collar and said, "Okay. Let's go, then both of them will fall and die." Sin knew he wouldn't die. But Haeyoung was afraid of dying. So he ran away without bothering Sin. Although Sin helped Seona, Seona, instead of thanking him, scolded Sin and told him why he needed to worry about them. Sin told him not to worry about her anymore. Meanwhile, Han was digging into Jeong Min's details. He saw Jeong Min's glasses in a few photos, but he remembered that there were no glasses there when the body was recovered. He found some glasses inside the evidence box. Jeong Min used to work as a math teacher at Arc High School, which is Seona's school. So he went to Hunt School to find out. At school, he meets Madam Gyujin. He asks Gyujin if Jeongmin used to wear glasses. However, Gyujin cannot give any important answer. When Han leaves after the interrogation, Seona is surprised to see him. And thinks to herself, what did she come to school to do again? Han goes to a bar at night for the investigation. Jeongmin used to come here regularly to drink. When she asks the bartender about Jeongmin, he tells her that Jeongmin's behavior was normal before. However, his behavior has changed for a while now. He would talk to himself. He would look at people and say one, two, three, four. When she asks about the glasses, she tells him that Jeongmin has been wearing glasses for a while now. So Han finally gets some important information. Meanwhile, Seona starts following Haeyoung after school.

A little later, Haeyoung secretly meets Teacher Seung Jin, and they enter a lodge. By then, Seona takes a photo of the two of them. Seona tries to blackmail Haeyoung by sending the photo to her. However, Haeyoung is nervous and says, "I'm still a minor. So, nothing will happen to me. The teacher will get the punishment that is due." Hearing this, Seona is quite disappointed. However, another plan comes to her mind. This time, she sends the photo to Teacher Seung Jin and blackmails him, demanding 20 million won. The nervous teacher scolds Haeyoung at school the next day. However, Haeyoung is silent. She ignores the teacher and leaves. However, her mind is racing. How did Seona know about their relationship? She decides to keep an eye on Seona. Over the next few days, Seona uses this power to expose the relationships of several couples, causing trouble between them. Seeing this, Sin becomes suspicious of Seona. One day, the two were freshening up in the washroom. Then Sin asks Seona, she didn't wear glasses before. So why is she wearing glasses now? When Seona lies, Sin catches her and asks, You can see the red line through these glasses. Right?

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She asks in surprise. Can Sin see these? Sin answers yes and proves it. She can indeed see the lines. When Sin presses Sin, Seona tells him that she found the glasses in the locker. Shin warns Seona that these glasses are very dangerous. That's why their neighbor Xiumin died. Now they need to know who made these glasses. But Seona wasn't interested in this. She was quite happy to get the glasses. So she ignored Sin's words and left. Seona was spending time with her boyfriend that night. At this time, she gets a message from Teacher Seung Jin and is her to come to the roof of the school building at midnight to collect the money. It is too late. So Seona starts walking around with her boyfriend, but she doesn't know that Haeyoung is following her. In fact, Haeyoung has overheard the conversation between Seona and Seon in the washroom. Now, Haeyoung also knows about the glasses, so he sees an opportunity and steals Seona's glasses. After wearing the glasses, Haeyoung also sees the S line on everyone's head. He was enjoying it very much. But suddenly, someone hits him from behind, and he becomes senseless. Meanwhile, Seona can't find the glasses and thinks that Seon has stolen her glasses. So she calls Seonshin and starts scolding him and says, "I'm going to school now. I'll have an argument with you when I get back from school." Saying this, he hangs up the phone. Shin wonders what Seona is going to do at school so late at night. He also comes out to see. Seona immediately goes to the roof and sees. Teacher Seongjin is standing there. The teacher asks him to give her 20 million rupees, if this photo gets leaked, she will sit on the road, then Seona says, Haeyoung and the others, when you were bullying me, you should have kept quiet, now you must understand how much it hurt me at that time, they were talking, at that time, the teacher's phone receives a message from his wife, someone sent the photo to his wife, exposing the relationship, the teacher gets very angry with Seona and starts fighting, by that time, Sen also reaches the school, then he sees something falling from the roof, at one point the thing comes in front of him and falls, then Sen sees that it is Seona, Shin notices that the S line on top of Seona's head is still visible, which means Seona is still alive, Shin quickly takes her to the hospital, a little later, after receiving the news, Han also comes there and asks Hanshin, did he stay at school so late at night What was Shin doing? He said he went to school to look for Seona because Seona had told him on the phone that she was going to school. He wanted to know what happened at school. Shin said he didn't know what happened, but he was sure Seona didn't commit suicide. The next day, there was a big commotion among the teachers at school about the incident. They thought Seona had committed suicide because she couldn't bear the bullying. Shin went to school and saw that neither the teacher nor Haeyoung had come to school today. He went straight to the roof. He wanted to understand how Seona had fallen. But he couldn't understand anything. At that time, a girl named Kyungjing came and supported Shin and said that she thought Seona hadn't committed suicide. The two were walking together, talking. Then, seeing a boy wearing glasses, Shin quickly took off his glasses and checked them. However, they were normal glasses. Meanwhile, a teacher named Jango goes to his desk and sees a pair of glasses lying there. When he asks Gyujin about it, Gyujin says that he doesn't know who left them there. Jango puts the glasses back on the desk and concentrates on his work. After a while, his curiosity subsides, and he is shocked when he puts them on. He can see red lines on the heads of almost all his colleagues. He is quite confused. What is this? At this time, Han enters the staff room to inquire about Seona's case. Jango gets scared when he sees hundreds of red lines on Han's head and takes off his glasses. So Han shows Gyujin a photo of a boy and asks about him. Seona had a date with this boy last night. Han takes the boy and interrogates him. At first, the boy denies everything, but later confesses everything. He says they were having a good time. But after entering a photo booth, Seona starts acting strangely. She gets restless thinking she has lost something and runs away. To verify the boy's words, Han checks the CCTV footage of the photo booth. In the footage, he sees Hae-young. He steals something from Seona's bag and leaves. Han checks all the CCTV footage around him. Hae-young walks into an alley. No trace of him can be found after that. Meanwhile, after finishing school, Teacher Jang goes to his sister's house. Jang has been living together with a girl for a while. Their wedding preparations were also underway. But in the meantime, he catches her in an intimate relationship with someone else. That's why he leaves the apartment and moves in with his sister. And in a few days, he will go abroad. So, for the last few days, he has wanted to stay with his sister. This is the first time he has come to his sister's house after marriage. This is also the first time he has talked to his brother-in-law. At first, he was hesitant about staying here. However, his sister said that his brother-in-law is out most of the time, week after week, on business. So, Jangu will not have a problem staying here. Anyway, Jangu was wearing his glasses at this time. So, he could see that his brother-in-law had several S lines on his head. Jangu understood immediately. These lines can tell how many relations someone has.

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So he easily learns about his brother-in-law's character. Then, while getting off the elevator, he notices that one of his brother-in-law's S lines is connected to someone on the fourth floor. When his brother-in-law accidentally presses the button for the fourth floor instead of the tenth floor while going upstairs, he becomes sure that his brother-in-law is having an affair with someone there. Although the man immediately presses the button for the 1000th floor, Jangu secretly presses the button for the fourth floor again. After reaching the fourth floor, as soon as he opens the elevator door, he sees that his brother-in-law's S line is connected to an apartment. However, Jangu doesn't bother anyone that day. The next day, after going out with his sister and brother-in-law, he sees a parcel lying in front of the apartment. However, it is not their parcel, but the parcel for apartment number 401. Jangu goes to deliver the parcel to apartment number 401. Jangu goes to deliver the parcel and sees that it is the same apartment where his brother-in-law is having an affair. Later, He saw the girl returning home from outside, so he left the parcel in front of the door and hid. The girl was quite young. She was talking to someone on the phone. It seemed that the parcel had been sent by the person on the other end of the phone. To find out the girl's identity, Jango checked the letter box and found out that the girl from apartment number 401 was named Kuak Cherim. Then he went back to the apartment. Today was their mother's death anniversary. So the siblings and niece prayed for their mother together. Then, while eating, Jango also asked his sister if she was happy in her married life. The sister said that she was quite happy. She also said good things about her husband. So, to make her sister sad, she did not mention her brother-in-law's affair. However, the next day, there was a commotion at school. Someone exposes photos of Teacher Seung Jin and Heyoung on the school website. As a result, everyone starts whispering. Then, incredibly, Teacher Seung Jin's body is found in the school parking lot. She is lying in her car at the intersection. There is also a suicide note with her. It is written that she had a relationship with Heyoung. Since the student teacher's relationship is known, she commits suicide out of shame. But when Han comes to the investigation, he thinks that it is not a suicide. Because the body looks like it. It is three days old. The body would have been lying in a car in the parking lot for three days. This is unbelievable. Moreover, their relationship was exposed today. Therefore, the cause of death in the suicide note does not match. Therefore, Han thinks that someone else is behind the teacher's death. After completing the investigation, Han was standing in front of the school. When Shin was leaving after school, he picked Sen up in the car. On the way, Han asked Shin how Siora had become a Siora. Siora was going to school that day. Shin did not answer this question and said, "Have you noticed?" Siora had been wearing glasses for a while. If you can find those glasses for me, I will tell you everything." Saying this, Shin got out of the car and left. Meanwhile, Jang was also following his brother-in-law. His brother-in-law entered a fancy restaurant. Then he also went inside and sat in a corner and saw his brother-in-law having dinner with the girl in room 401 and gifting her an expensive necklace. After dinner, they both entered the hotel room. Just then, Jang grabbed her by the hand. He took his brother-in-law aside and grabbed him by the collar, saying, "Why did you cheat on my sister?" The man apologized and told Jango that he would end the relationship today and live a normal life with his sister. So Jango gave him an ultimatum and left. The next day, Jango had a flight to Canada. So, he said goodbye to his sister and went to school. After saying goodbye to school, he was waiting to go to the airport. Then, out of curiosity, he checked Cherim's social media profile. There was a photo of the necklace that his brother-in-law had gifted him. He was also shocked to see another post. The girl claimed that she was pregnant. Seeing this, Jang also got angry and ran towards the house to confront his brother-in-law. When he came in front of the building, he saw that there was trouble. His sister was constantly hitting Cherim's car with her car. Jang also ran over and tried to calm his sister down.

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At that time, his brother-in-law also arrived there. However, surprisingly, his brother-in-law goes straight to Cherim and asks if she is okay. Seeing this, Jango gets angry and punches his brother-in-law. Then Jango's sister stops him and forbids him from fighting. After the man goes inside with Cherim, Jango's sister tells him, This man is not my husband. Cherim is his real wife. And I am his protector. I have been with him for so long under these conditions. Hearing this, Jango becomes speechless. While trying to make his sister happy, he ends up hurting her even more. Meanwhile, Han was reading Teacher Seong Jin's suicide note over and over again. Then he suddenly realized that if Seona had committed suicide, she would definitely have a suicide note too. So he ran home and started searching the room. Although he doesn't find any suicide note, he finds a notebook where Seona has drawn sketches of people and many red lines on their heads. Han takes the notebook to Sin and shows it to him, and asks, "Are those special glasses?" Can you see them when you wear those glasses?" Then Sin admits that these lines are called S lines. The more people a person gets close to, the more they can see the total count when they wear these glasses. However, Sin has had this power since birth. He doesn't need any glasses. Although Han can't believe the words at first, seeing Sin's determination, he can't deny it. Anyway, a few days pass. Sin falls asleep in class. Seona has been in a coma since the accident. Sin dreams in his sleep that the S line on Seona's head is disappearing and she is dying. He wakes up in shock. When the class ended, Sin's two friends, Jun Seon and Kyun Jin, asked him why he was sleeping in class. Sin said that he had recently taken a part-time job at a hotel reception and that he was tired because he couldn't sleep at night. Meanwhile, at school, Seona's teacher, Seung Jin, and Haeyoung had almost stopped talking. Everything was going on normally. A teacher named Miss Young made a mistake in a file, and the senior madam scolded her. An interesting thing is that Musing also has glasses that can show the S line. He saw that this madam had not met anyone yet. He was quite surprised to see that such people still existed. Then, he went to his desk and started to press the stapler to take out his anger on the madam. Whenever Miss Young was tense or angry, she would press the stapler. At lunch time, Miss Young was having lunch in the canteen with the other staff. Then the music teacher entered the canteen. He was very handsome, and everyone started whispering about him, but Miss Young kept quiet; in fact, she also liked the music teacher very much. Miss Young's dream was to become an actress, but there was no place to practice acting at home, and even if she made a little noise, the people around her would get angry. That's why she went to a hotel every day, booked room 206, and then practiced acting all night and returned home in the morning. And Miss Young used to go to the hotel where Shin worked. So, like every other day, Miss Young went to the hotel and took the key to room 206 from the reception, and went inside. Today, John Seong and Kyung Jin came to meet Shin. They also sat at the reception with Sin behind the curtain. Everyone was coming in pairs. But this woman came alone. So, out of curiosity, Kyungin poked his head out to see her. Seeing Misyeong, he felt quite familiar. However, since Misyeong was newly dressed, he couldn’t recognize her. This was their teacher. So, going to the room, Misyeong lay down on the bed and started practicing his acting by delivering dialogues. In the morning, Sin, Kinjin, and Jun Seun were standing on the roof. At that time, Misyeong was walking along the street. Now, when he saw Musyeong, Kyungjin bought her. This was a teacher from their school. Anyway. Meanwhile, Han was checking Sin’s details. He also got Sin’s parents’ case file. After learning about Sin's parents, Han's doubts were dispelled, and he was reassured. Sin had told him the truth about the S line that day. When he met Sin, Han asked if there was an S line on Siona's head. Although Sin didn't want to leak anyone's privacy, Han understood that Siona had an S line on her head. So he asked Sin.

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Who was Siona's S-line connected to? Shin Sin told him that he didn't know who it was, but it wasn't connected to anyone from Siona's school. Han suspected that Siona's boyfriend might have killed her. When Sen returned home and was sleeping, he saw on the TV news that another murder had taken place in the city and that the murderer had been caught. However, when the murderer was being taken away, he didn't show any remorse. He had glasses in his eyes and was looking over the heads of all the people and smiling. Seeing this, Sen could understand that the murderer also had glasses to see the S-line. That is, there were many copies of these glasses. The next day, Siona was going out after school. At that time, John Siona wanted to take him for a walk. John liked Siona in his heart. Although Sin didn't understand the matter, John agreed to go with Siona. Jun Seon takes Shin to a swimming club. Standing in front of the swimming pool, Jun Seon asks Shin if he can swim. Shin replies no and jumps into the water. After a while, Shin doesn't come out of the water, so Jun Seon jumps in, panicking. Shin starts laughing. It's been a long time since he could laugh. Shin's body was wet when he came out, so Jun Seon took off his sweater and put it on Shin's back. After that, the two of them sit down and eat ramen. While eating, Shin tells Jun Seon about his ability to see the E-line, but Jun Seon doesn't react, which surprises Shin because Jun Seon trusted him completely. When he got home, Shin had strange feelings. He couldn't get Jun Seon out of his mind. He felt ashamed when he thought about her again and again. The next day, Sen went to duty as usual. Miss Yu came to the hotel today as well. This hotel is a safe place for her. Here she can do whatever she wants. And it was in this room, number 206, that she got the glasses. Another interesting thing is that there is a hole in the wall of this room. Through which the next room can be seen. Almost all couples come and get intimate there. Seeing this, Missyong gets very excited. By hearing the sound from the next room, Missyong can understand that someone has come to the room today too. So she looks inside the room through the hole and is surprised. It is her crush, the music teacher. Seeing her, Missyong is overjoyed. But after a while, another girl enters the room and gets intimate with the music teacher. Seeing the person she likes with someone else, Missyong gets upset. He couldn't accept it. The girl said as she was leaving. She would come back tomorrow. Miss Yu heard this. So he booked his room for a few more days. The next day, before the girl arrived, Miss Song made a plan. He mixed sleeping pills in the water bottle in the music teacher's room. He took another cylinder and waited for the girl. As soon as the girl arrived, he hit her on the head with the cylinder and tied her up in his room. Then, dressing up like a girl, he went to the music teacher's room. However, upon seeing Miss Song, the teacher recognized her and ignored her and started walking away. Then Miss Song threw the stapler in his hand at the teacher, and it hit the back of her head. By then, the effect of the sleeping pills had also started on her. So she became senseless. Miss Swing tries to get close to the music teacher by raising her hand. But at that time, she notices that the bed is getting soaked with blood. A little while ago, she was injured in the head by a stapler. There was continuous bleeding from there. Miss Swing still climbs on top of the teacher and starts jumping. So that she can satisfy her inner needs. But at one point, the music teacher dies. This makes Miss Swing very regretful. She lies in the bathtub and starts stabbing herself with the stapler. A little later, Sin was passing by. Then, when she heard a noise from room 206, she ran and found the music teacher's girlfriend tied up. When she unties the girl's mouth, she tells Sin everything. Sin runs and sees the music teacher lying dead on the bed, and Miss Swing lying dead in the bathtub. When the police are called, Han comes to investigate. Shin tells Han that Madam Missing might have had the S-line Rekha glasses, too. He saw a pair of glasses like that in her eyes. This murder might have been caused by the glasses. The most dangerous thing about these glasses is that wearing them makes them feel very special. And feeling special makes them mentally deformed. So they didn't find any glasses at the scene. So at night, Han comes back to the hotel room alone.

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Then he drained all the water in the bathtub and got himself a pair of glasses. Standing in the mirror with the glasses on, Han saw the S lines on the top of his head for the first time, and the world stared at his reflection in shock. So after wearing the glasses, Han started seeing the S lines on everyone's heads. Han brought the boy he was dating on the night of Siona's accident to the hospital to find out if they had an illicit relationship. However, it turns out that Siona and the boy's S lines are not connecting. This confirms the defeat. There was no physical relationship between the two that night. Meanwhile, Shin and Jun Siona were chatting. Shin's birthday is on November 1st. They were talking about this. At that time, a message came to Shin's mobile from an unknown number. The message wished Shin a happy birthday. The world you see is the world I see, too. So come to the school rooftop on your birthday night. Sin is quite surprised to see the message. On the other hand, a girl named Gina from Sin's school comes to the police station to file a complaint. She says that last week she went to a friend of hers, Hanyu, for a drink. At one point, she lost consciousness, and after regaining consciousness, she thinks she was raped. Gina is asked if she has any previous sexual experience. Gina shakes her head and says no. This time, Han feels a little embarrassed because through her glasses, she can see four lines on Gina's head, but Gina says she has no previous experience, meaning she is lying. The next day, Han Dongsik goes to the school with her. When he gets there, he first meets Madam Gyujin. Han notices that Gyujin doesn't have a single line on her head. After the exchange of tactics, Han says that he wants to meet a boy named Hanyu. When Madam Hanyu informs him, Han starts interrogating the boy. Han notices that Hanyu only has a single line on his head. When he tells the boy about the accusation of adultery, he completely denies the incident. So, since they were at school now, they left without bothering the boy. When Han leaves, he falls in front of Shin. Seeing the glasses in Han's eyes, Sen realizes that they are those special glasses. Han's glasses are missing. That's why Sen gets very angry and says that these glasses are very dangerous. Give them to me. However, Han starts making various excuses not to give the glasses. The two are arguing. At that time, Madam Gyujin came there. So he leaves in a huff.

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Han rushes to save his father. However, Gyujin says that to save Seona, he must kill his father. Saying this, Gyujin hands Han a knife. However, Han tries to stab Gyujin with the knife. But Gyujin grabs his hand, takes the knife away, and pushes him away. Then he kills Han's father. Han then starts shooting at Gyujin. Even though all the bullets in the pistol are gone, Gyujin is not hurt. He goes to Han, grabs his throat, and lifts him into the air. Meanwhile, Kyujin's behavior suddenly changes when he gets to the roof. Sin notices Kyujin taking out his glasses from his pocket and putting them on. Sin asks, Where did he get these glasses? Kyungjin says that Madam Gyujin gave them to him. When Sin takes the glasses away, Kyujin attacks him. During the fight, Sin took off his glasses and threw them away, and then broke them. As soon as he broke them, Kyungjin became normal. He didn't even remember it. What was he doing on this roof? Sin's cheek was slightly cut during the fight. Surprisingly, the drops of blood that were coming out were not falling but were going up. Sin Sin was looking at them in surprise. While looking, he reached the world of the glasses and saw Gyujin holding Han by the throat. Sin shouted for Han to let go, and Gyujin threw him away. This made Han unconscious. Gyujin told Sin, "You always wonder why you were born with this strange power? You used to think of this power as your curse. Today, you will find out what the real purpose of your birth is. This power of yours will be a blessing and benefit everyone." Saying this, Gyojin stabs Shin. However, before the stab wound, a woman comes in front of Shin, and he is injured. Shin sees that this woman is his mother. Shin's mother was also a bespectacled person. Shin's mother says, "I learned about your father and aunt's relationship from your drawing. But that's not it. Rather, I also had such glasses. With that, I was able to see the S line between the two of them. So don't blame yourself for that incident. Saying this, Shin's mother dies. As Shin stands up, Gyojin stabs him in the stomach. Then Shin's blood starts to rise. Sen also rises a lot at Gyojin's hand. Shin's blood collects and forms a red ball. After all the blood comes out, Sen falls senseless. Gyujin laughs and says that in exchange for your death, the people of the world will now get special powers. With this power, they will all be able to see the S line with their naked eyes. Then, at Gyujin's signal, the red coil blasts and fills the entire sky. At this time, Sin regains consciousness and plunges the knife into Gyujin's stomach. Still, Gyujin laughs and says, "You're too late. I've done my job." Saying this, Gyujin dies. As soon as Gyujin dies, all the people with glasses there become normal. And they start running around in panic.

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By then, Han had also woken up. Within a few moments, they returned to the normal world. They saw the time they were walking out of school. The sky was covered in S-line. Hundreds of people were looking at the sky, wondering. What was going on? Within a few moments, they had the power to see S-line, and a panic situation was created. However, people soon adapted to this situation. But they now wear masks and helmets to hide their identities. Because anyone who sees the S-line can understand their character. Shin used to want to live in a normal world. He could only see the S-line. That's why he felt abnormal. But now everyone can see the S-line. So to Shin, this seems like the normal world. By that time, Seona had also recovered. She recovered and resumed attending school. She also has a good relationship with Han. Anyway, Shin goes to lay flowers at John Seon's memorial one day. After all, John Seon is his first love. Shin was standing in front of the memorial. At that time, someone called his name. At first, Shin thought it was a mistake. But again, someone called his name several times. But no one was in sight. Suddenly, Gyujin appeared and put his face near Shin's shoulder and called his name. With that, the story of the series also ended. Viewers, what do you think after watching the series? Is the ability to see Eslen really a blessing or a curse? We look forward to hearing your comments. Tell us your comments in our comment box. We will appear before you again soon with a new event. Till then, stay well.