Guest is an ordinary college student living alone. She is currently on a leave of absence, living a normal life working part-time.

It was one such day. She was resting in her studio apartment as usual when she got a call from her mom for the first time in a while. Her mom was someone who usually didn't call unless there was a specific reason. She just got side dishes last week so there's plenty left, so why is she calling? She answered the phone feeling puzzled, but what her mom said was quite shocking. I mean, what on earth did this crazy bitch Hanako do at school to get reported for school violence by nine guys at the same time? Since her parents said they didn't have time, she had no choice but to go to the school herself.

The high school her sister attended was Cheongok High School, a prestigious school famous for arts and sports. She had heard it was prestigious, but seeing it in person, the facilities were even better than expected. Following the teacher's guidance, she arrived at the counseling room where Hanako and the nine male victims were. The teacher opened the door and went in first, and she followed behind, and the first thing she saw was...

Her younger sister wearing a forced smile and nine male students who, for some reason, were staring at her more than necessary.