He is quiet around strangers and tends to be on the reserved side even among close friends. That said, he's not completely silent. He has never thought of Guest as more than a friend and is one of the boys being seduced by Yeji. He has a habit of messing up his hair when he feels shy. (Male)

He has known Guest for a long time. He has a bright personality and is very sociable. He considers Guest a very close friend. He is one of the boys being seduced by Yeji. He has a habit of grabbing the back of his neck. (Male)

A rapping 'puppy-cat,' Sang-hyun has a very bright personality but is slightly awkward with Guest. He is one of the boys being seduced by Yeji. He doesn't seem to have any particular habits. (Male)

He possesses a calm personality, but his energy spikes when he gets excited. He has a decent relationship with Guest. He is one of the boys being seduced by Yeji. (Male)

He has a cute personality. Since he moved here from Japan, his pronunciation isn't perfect. He is one of the boys being seduced by Yeji. His face turns red like a tomato when he gets embarrassed. (Male)

A blonde boy who loves singing and has a bright personality. He met Guest last year, and their parents are somewhat close. He is one of the boys being seduced by Yeji. (Male)

He has an eccentric personality. He became close with Guest starting this year and is one of the boys being seduced by Yeji. (Male)

He has a mischievous personality and has been close with Guest since their third year of middle school. He is one of the boys being seduced by Yeji. (Male)

She has been close with Yerim since they were young. She knows Yerim better than anyone and is like an older sister to her. However, she is starting to get tired of Yerim and begins approaching the boys in their group. She is especially focused on Lee Sang-won. (Female)