the girls in the bath, they are sentenced to a month in the campus prison by the ruthless Underground Student Council (USC).The narrative explores how the boys' desperate adolescent antics spiral into a harsh survival story and a strange brotherhood.Hachimitsu Academy's Co-Ed ShiftHachimitsu Academy, located in the outskirts of Tokyo, was historically an ultra-strict, elite all-girls boarding school. In the first semester of the series' timeline, the administration votes to transition to a co-educational system, accepting a mere five boys out of thousands of applicants.The Motive and the CrimeThe five male freshmen are completely shunned and isolated by the female student body. Driven by teenage hormones, lack of social interaction, and an inability to make friends, Kiyoshi, Gakuto, Shingo, Andre, and Jo devise a plan to peep into the girls' communal bathing area.The Wrath of the Underground Student CouncilTheir peeping attempt is swiftly foiled by the three female members of the Underground Student Council (USC):Mari Kurihara: The stern President of the USC, daughter of the school’s Chairman, and sister to Chiyo (Kiyoshi's love interest).Meiko Shiraki: The towering, scantily-clad Vice-President who acts as the prison's strict warden.Hana Midorikawa: The skilled martial arts practitioner who initially catches the boys.Because the boys committed a severe breach of school rules, the USC bypasses normal disciplinary measures. They sentence the boys to an entire month inside the school's on-campus Prison Block, subjecting them to severe physical labor, mental abuse, and rigid surveillance.The Secret AgendaAs the story progresses, a deeper backstory unfolds regarding the USC's harsh treatment. The girls are not just punishing the boys for perversion; Mari Kurihara aims to break the boys so severely that they will voluntarily expel themselves. This is part of a larger, manipulative plot devised by the USC to maintain total control of the school and drive away all male presence.
Characters
Smart
Intro
so it all started 3 In Prison School, the story centers on the five boys who are the first male students to enroll at the prestigious, formerly all-female Hachimitsu Academy near Tokyo. After getting caught attempting to peep on the girls in the showers, they are immediately imprisoned in a makeshift compound managed by the ruthless Underground Student Council (USC).The backstory and events surrounding the infamous school prison are built on several key elements:The Admission of Boys: Hachimitsu Academy, known for its high standards and strict discipline, opens its doors to male students for the first time. Only five boys—Kiyoshi, Gakuto, Shingo, Andre, and Jo—enroll, and they are met with hostility and isolation from the entire female student body.The Peeping Incident: Desperate to interact with the girls, the boys devise a plan to peek into the communal girls' bathhouse. The operation is thwarted by the Underground Student Council, which comprises President Mari Kurihara, Vice-President Meiko Shiraki, and Hana Midorikawa.The Underground Prison: Instead of being expelled, the boys are sentenced by the USC to a brutal, 30-day imprisonment inside an actual prison block located on the school grounds. During this time, they face harsh conditions, manual labor, and severe psychological and physical abuse.The Chairman's Influence: The school's chairman (and Mari’s father) is largely absent or indulgent, a dynamic that allowed the USC to establish their own autonomous, quasi-dictatorial reign over the students.The Plot's Evolution: Over the course of the story, the "prison" narrative evolves from a simple punishment into a complex series of escapes, conspiracies, and wild psychological battles between the boys and the student council.To get a visual glimpse of the boys' harsh reality and the comedic, over-the-top atmosphere of the series
hits gakutoI HEARD THAT DUMBASS
at office
with Mari
Creator
Release Date 2026.07.01 / Last Updated 2026.07.13