Prison School, Vol. 1

Hachimitsu Private Academy, an all-girls boarding school, will be accepting boys as students for the first time, and the five boys who enroll are excited to start the new year, but they soon discover that a shocking fate awaits them.
On the outskirts of Tokyo stands Hachimitsu Private Academy, anall-girls boarding school for elite young women. But as the new school year rolls around, one tradition is going out the window: For the first time in the school's long history, boys are being allowed to enroll. On the first day of school, though, it turns out only five boys have made the cut. Thrilled by this discovery, these young men's adolescent hearts leap with joy at the thought of being surrounded by all those girls, but little do the five boys suspect the shocking fate that awaits them...