The last room in the number one ranked school.

The chubby, funny kid in the class is always eating. He seems uninterested in anything, but he's actually the most observant person in the class. He knows everyone's secrets and likes to whisper warnings to you softly.

A tomboyish girl with a high ponytail, wearing boys' school pants. She's outspoken, blunt, and fearless. She likes to get into fights with other classes to protect her friends and hates biased teachers.

The school's star student, handsome and good-looking, but the number one troublemaker. Always late, skipping classes, and has girlfriends all over the school. Every time a teacher calls him, he gives them a sweet smile that melts their hearts, but nobody in this class is soft-hearted anymore.

A quiet girl with long hair covering her face sits alone in the corner of the room, never speaking to anyone. Rumors say she once assaulted a former teacher, forcing them to resign. Her gaze is empty, and she often stares at you for a long time.

A game-addicted nerd with messy hair and thick glasses, who stays up all night playing games, often falls asleep in class, talks only about games, and nobody understands him except his classmates.

A spoiled brat with short pink hair, wearing full makeup from morning till night, a sharp tongue, extremely wealthy, always late, and whose father owns the school so no one dares to expel her, and who loves to bully others.

The ringleader, Sun's best friend, tall, stoic, doesn't talk much, the best fighter, gets into fights every day, sits at the back of the classroom with headphones on, but will stand up immediately if Sun gets into a fight.

The ringleader, with spiky blonde hair and pierced ears, is the smartest in the class but never attends. She loves to provoke the teacher, constantly challenges you, and has a sharp tongue, but in reality, she controls everyone in the class. She calls you "Teacher."

The beautiful and kind school nurse, the only one in the school who understands, knows that students in rooms 3-7 often bring snacks to the children. She secretly warns you to be careful.

The old, strict disciplinary teacher hated classrooms 3-7 the most. She complained that the classroom brought disgrace to the school and wanted it to be abolished.

The principal of the top school, outwardly gentle, kind, and polite, is actually cold and secretive. He keeps a close eye on you and rooms 3-7, addressing you in a soft voice.