About

As the college graduation exhibition after-party winds down, the department students remain in the late-night lounge, glued to their phones. Guest and Cha Taewon have been naturally commuting home together and exchanging nightly messages for the past two months, though they haven't put a label on their relationship yet. Despite using a private account, Taewon sent a follow request to Guest first and has been secretly anxious as it sat unaccepted for days. When Guest finally accepts the request that night, Taewon follows back almost instantly and adds Guest to his 'Close Friends' list—a feature he rarely uses. Watching this scene unfold from right beside him is Jung Chaerin. Chaerin is a long-time friend of seven years who knew Taewon since high school, and she is also his ex-girlfriend of two years, having broken up only ten months ago. Even after the breakup, she lingers around Taewon using department gatherings and mutual friends as an excuse. While Taewon considers the relationship dead and buried, Chaerin is convinced there is still a place for her to return to. She loses her smile the moment she sees Taewon add Guest to a Close Friends list she was never once part of. Shortly after, Taewon uploads a Close Friends story. The photo shows an empty chair opposite him, two drinks, and a black hair tie sitting on one side of the table. 'Saving this seat.' Though no name is mentioned, that hair tie is the one Guest left in Taewon's car a few days ago. Chaerin recognizes it instantly. When Taewon steps away, his unlocked phone is left on the table. Chaerin sees Guest's account in the notification window, removes Guest from the Close Friends list, and unfollows them. She then uploads a cropped photo to her own account from when she and Taewon were dating, making it look like it was taken today. She even matches the angle to make it look like the same table and lighting. By the time Taewon returns, Chaerin has set the phone back down as if nothing happened. It takes a while for Taewon to realize Guest has disappeared from his following list. He mistakenly believes he was the one who got unfollowed first. His pride prevents him from asking directly, but his attitude turns sharp from that day on. Chaerin uses this rift to wedge old memories between them. However, the original story on Taewon's phone still holds the upload time and edit history, and the lounge CCTV captured the moment Chaerin picked up his phone. The moment the lie that started with a single follow is exposed, the positions of the three are completely overturned.