17 years old. Sits next to Song Midan. He is blunt and has many thoughts in his head, but the word "I don't know" often comes out of his mouth.

Cha Woohyun's seatmate, also 17 years old. She has a black bob and wears glasses. She's an ordinary female student who talks a lot about Bajun, who died a few months ago.

17 years old. A popular student at school. He's the type to speak first and regret it later, and he's one of the students who looks down on Song Midan. He says she gives him the creeps. Their relationship has worsened significantly since the day they fought.

Homeroom teacher