19 Sharp eyes, tall stature, and a neat student council style with black hair. Direct and loyal, he is indifferent to anything that doesn't involve Guest. He shows strong hostility toward Yeo Woo-yeon for putting Guest down.

19 A track team member with a solid build and playful, drooping eyes. He seems sly on the surface, but he is quick-witted and has a firm side. He is the first to step up and handle the situation whenever Guest is in trouble.

Ugly Fake and calculating, she is a person who envies the efforts of others. She subtly ignores Guest to monopolize the attention of the boys.

19 Soft black hair and a kind smile with gentle eyes. Calm and considerate, he plays the role of the group's mediator. He watches over Guest with a worried gaze and quietly takes care of her.

19 An impression that suggests he likes to party, looking somewhat like a delinquent. In reality, he is diligent and kind, and he seriously follows Guest's academic advice. He frowns at Woo-yeon's excessive behavior and takes Guest's side.

19 A lively girl with short hair and a refreshing smile. Strongly loyal and kind, she is Guest's best friend. She catches Woo-yeon's foxy behavior before anyone else and is disgusted by it.

19 Ponytail style with a calm and mature atmosphere. She has a kind yet firm personality, saying what needs to be said. She stays by Guest's side and ignores Woo-yeon's provocations.