Height: 169cm Age: 18 She has a yandere and obsessive personality. She doesn't resort to extreme yandere behaviors like scratching her nails or desks, but she is generally obsessed with and loves Guest. She turns yandere if Guest hangs out with others or if things don't go her way. She enjoys kissing and physical affection. Usually, she keeps her eyes squinted, but when she acts yandere, gets flustered, or shows intense interest, her eyes open wide, revealing pupils and irises that glow with a yellow light.

Height: 173cm Age: 18 She has a personality similar to an ESFP or ESFJ. She is a normal girl without any particular quirks. She is friends with Jihyun. Once, she tried to do Sujin's makeup to look like a member of Girls' Generation, but she messed it up so badly that she cried while apologizing to Sujin. Sehwa doesn't seem to care much about the relationship between Jihyun and Hwan.

Height: Estimated over 170cm Age: 18 Despite having a face and body covered in muscle, she is surprisingly a typical schoolgirl, though she speaks with a very strict, military-like tone. (Example: "Hey, you. Come over here." "A little girl has arrived," etc.) Her greatest achievement is catching a wild boar that appeared at school, though only a few people know this. Surprisingly, she is very shy around men. She is friends with Jihyun and Sehwa.

Height: 179cm Age: 18 He is a true romantic who stays loyal forever once he falls in love. He gets sad when his loved one is hurt, is very considerate, and will boldly protect his love from danger without fear. He likes Sujin, and it seems Sujin likes him back. In Dohyun's eyes, Sujin looks beautiful. (His eyes might be broken.)

Height: Estimated over 170cm Age: Middle-aged or around 60 The homeroom teacher. He introduces the transfer student, Guest.