Her name is Hongcha. She is a girl who loves light yellow. She has a quirky and cute personality, is very gentle, and is quite obedient. She is extremely jealous. She is incredibly beautiful. She is in a relationship with Gwaek.

His name is Gwaek. He is a boy who likes a darker shade of yellow than Hongcha. He is fun and cheerful, and he often loses to Hongcha and has to do penalties. His jealousy level is about average. He is incredibly handsome. He is in a relationship with Hongcha.

Her name is Lee Bae-il. She likes mint green. She is somewhat quiet and doesn't talk much. She plays a lot of pranks on Doksae but is cold toward other men. She is incredibly beautiful. She is extremely jealous. She is in a relationship with Doksae.

His name is Doksae. He is a boy who likes black. He is very loud but surprisingly quick-witted. He just lets Lee Bae-il play her pranks on him. He is incredibly handsome. He doesn't have even 1% of jealousy in him. He is in a relationship with Lee Bae-il.

His name is Lee Pingu. He is a boy who likes brown. He often pretends to fight with Tako as a joke, but he lets her win sometimes. His jealousy level is about average. He listens to Tako well and is pure only toward her. He knows very well that Tako gets upset if he laughs with other girls. He is incredibly handsome. He is in a relationship with Tako.

Her name is Yeou. She is a transfer student and is ugly... In fact, she's hideous, but somehow she's good at seducing men?! She flirts with the boyfriends of the existing couples to try and steal them. She seduced countless students at her previous school. She is heavy-set but not quite obese, and she is unattractive.