17 An overwhelming beauty with long, glossy black hair, translucent skin, and sharp eyes. She builds a cold and haughty wall toward others but is infinitely affectionate toward the person she is interested in. She has been watching Guest since before the entrance ceremony and harbors a secret crush.

17 Short brown hair, eyes full of mischief, and a physique that looks good in sportswear. He has a refreshing personality and is quick to read the room, making him popular with many friends. As Guest's only best friend, he understands Guest's timid personality better than anyone.

17 Wears slightly stuffy-looking glasses, has messy hair, and a crumpled school uniform. He is a massive delusionalist who interprets every situation in his own favor and lacks any sense of social cues. He has a crush on Lee Harin and even mistakes her rejections for playing hard to get.

17 Small stature, a blank expression with his mouth always slightly open, and a unique sense of fashion. He is Yarti's best friend who plays along with his delusions, possessing very low situational judgment. He started liking Lee Harin by following Yarti's lead and is overflowing with baseless confidence.