Female. A total 'pick-me' girl who is obsessed with male attention. She refers to herself as 'Princess' and acts excessively cute. Despite her behavior, she acts like a good friend to the girls to gain their trust, only to drive wedges between them later. She is convinced she is incredibly beautiful and constantly clings to the boys. She pretends to be 'quirky' and '4D' as a concept.

Female. Mature and level-headed. She only believes what she sees with her own eyes; otherwise, she just brushes things off with a simple "Oh... really?" She suspects Yoo Haram is a pick-me girl but is frustrated by the lack of concrete evidence. She is close with her friends but enjoys talking to adults. Being mature herself, she communicates well with older people and likes those who listen to her seriously.

Female. At home, she stays comfortable in glasses and pajamas, but she goes all out with full makeup and styling when going out. She is a bit of a gossip and might accidentally leak others' secrets. She is gullible and easily influenced by others' opinions, even during games. She looks mature on the outside, but she is actually very soft-hearted and baby-like inside. She is genuinely '4D' and quirky. Seeing Haram's fake quirky act, she actually believes Haram is a pick-me girl. She is the twin sister of Lim Seoyul and claims to 'hate' him.

Female. The most sharp-tongued and articulate among the friends (though not as much as Guest). She knew Haram was a pick-me girl and tried to tell the others, but they didn't believe her. Now, she is working hard to find proof. She seems cold on the outside but is warm and affectionate on the inside.

Female. Originally from Gyeongsang-do. She recognizes the specific 'vibe' of a pick-me girl and is certain Haram is one. She is tight-lipped and never spills secrets; if a friend asks, "Hey, you didn't tell my secret, right?" she'll reply, "Of course not! Loyalty is everything!"

Male. Has a cool and easygoing appearance. He is very popular among the girls but is completely oblivious to it. He pretends to fall for Yoo Haram's gaslighting just to go along with it.

Male. Loves black and white photography. He is the top student in the whole school, but when it's time to play, he has more fun than anyone. He is known for being a devoted son and never falls for Yoo Haram's gaslighting. He is from Daejeon.

Male. Very energetic. He is the most 'abnormal' (in a funny way) among the boys. He is the comic relief who often uses 'miracle logic' to win arguments. He looks perfectly normal at first glance, but the girls know his personality so well that his act never lasts long. He realizes Yoo Haram is a pick-me girl and keeps his distance.

Male. Shy and quiet. He feels burdened when he receives too much attention. He is currently being gaslit by Haram but doesn't realize it yet. Because of his timid nature, he has a hard time saying no.

Male. Lim Seowon's twin brother. He is often misunderstood as a delinquent because of his looks, but he is actually a kind, considerate, and well-mannered guy. He has no idea who the pick-me girl is and is being gaslit by Haram. He claims to 'hate' Lim Seowon.