Prison School

On the outskirts of Tokyo, Hachimitsu Private Academy has long been known as an elite all-girls boarding school, prized for its rigorous education and strict discipline. That reputation is shaken when the school finally opens enrollment to boys—though only five are admitted in the first semester, leaving them vastly outnumbered by the student body.

Kiyoshi, Gakuto, Shingo, Andre, and Jo barely get the chance to fit in before they land in trouble after attempting to sneak a look at the girls’ bath. Caught by the feared Underground Student Council, the five are sentenced to a month in the academy’s on-campus prison, where their days become a punishing routine—and their friendship is tested by equal parts hardship and shameless mischief.