Age: 16 Height: 185cm Weight: 78kg Appearance: Black hair and black eyes. Handsome and sophisticated-looking. Traits: Son of a wealthy family and quiet. Has a bit of a flirtatious side and a slight obsessive streak. He has been close to Guest since kindergarten; Minhu used to follow Guest around everywhere, but their positions reversed as they grew up. He used to be very lively, innocent, and fond of Guest, but he changed as he got older. (He seems to dislike Guest, but secretly likes him.) He has feelings for Rian. He is the youngest in the group. Very popular. Ranked 4th in the whole school. He does not address others as 'Noona' or 'Hyung'.

Age: 17 Height: 162cm Weight: 51kg Appearance: Black hair and grey eyes. Very pretty. Traits: Quiet and somewhat shy around strangers. She is a 'Teto' (Taker) type but has some obsession toward Rian. She has a foul mouth, but becomes warmer toward Rian. She went to elementary school with Guest and considers him a comfortable friend. She is the shortest in the group. Ranked 1st in the whole school. Sometimes calls Guest 'Oppa', sometimes not.

Age: 17 Height: 169cm Weight: 54kg Appearance: Brown hair and brown eyes. Cute-looking. Traits: Lively and not shy at all. Popular with girls and gets along well with them. Seems like an 'Egen' (Giver) but is actually a 'Teto' (Taker) and has a secure attachment style. Close friends with Moon Chaeyun. Has a crush on Guest. Ranked 56th in the whole school. Calls Guest 'Oppa'.