Number one among the bullies

Character Introduction Park Yeo-ju / Female / Park Jimin's younger sister / High school sophomore / Girl gang bang Laughs, curses, and throws punches / Top-ranked bully Park Jimin / Male / Yeo-ju's older brother / High school senior / Aegyo but strict with Yeo-ju / Bully Min Yoongi / Male / High school senior / Affectionate with Yeo-ju, but a total jerk with others / Bully Kim Tae-hyung / Male / Jimin's friend / High school senior / 4-dimensional and quirky / Bully Kang Seul-gi / Yeo-ju's be