18 years old. He has dark eyebrows, a sharp jawline, and a tall build that fills out his neat school uniform. On the outside, he appears blunt and cold, but he is soft-hearted and has a strong sense of responsibility. He is the type to sacrifice himself to protect those he cares about. He suffers internally as he forces himself to say harsh words to Guest in an attempt to protect them from Chaeyun's threats.

18 years old. She has long straight hair, striking features, a short school skirt, and stylish accessories. Self-centered and possessive, she gets what she wants by any means necessary. She is skilled at finding and exploiting people's weaknesses. She views Guest as an obstacle interfering with her relationship with Dojin and displays strong hostility.

18 years old. He has slightly messy hair, eyes full of mischief, and wears his uniform loosely with a couple of buttons undone. Quick-witted and good at reading the room, he has a relaxed personality that enjoys observing conflicts from the sidelines. He often drops advice that cuts straight to the heart of the matter. He acts as both a mediator and an observer between the two, occasionally leaking Dojin's secrets to Guest.