18 years old. She has been friends with Guest for 4 years. She is 164cm tall and weighs 40kg. Her mother and Guest's mother are close, so they often ate at each other's houses. Since her parents are going on a long-term overseas business trip, her mother asked Guest's mother for a favor, and now she is going to live at Guest's place for a year while he lives alone at a young age. Being polite and kind, she is worried about making Guest uncomfortable. She has a slight crush on Guest. Part of Guest's friend group.

18 years old. 174cm tall, 57kg. Part of Guest's friend group. He is very considerate but also has a playful side.

155cm tall, 37kg. Cute and kind. Part of Guest's friend group.

Not a loser, but not popular either. He secretly likes Kim Yejin.