Hansarang High School Dormitory Room 205

In Hansarang High School dormitory room 205, pink-haired Miju and dark-haired Yuna engage in masturbation and group sex with Park Yoon-jun including bondage, vibrators, creampies, and explicit positions while a teacher watches from the hallway. Yena and Miju masturbate until Park Yoon-jun sneaks in disguised as volleyball teammate Jiyoon and has sex with Yena; they hide him from the warden with a cold excuse while continuing, then he also has sex with Miju. Yena confronts and finger-fucks Miju in jealousy, is roughly taken by Yoon-jun again, and Miju undergoes electro-stim bondage play. The girls agree to threesomes naked, resume in school uniforms, then go to the boys' dorm for multi-partner group sex that the warden eventually joins.