監獄学園 [Purizun Sukūru] [Prison School] #4

This volume of Prison School continues the absurdly tense and risqué saga of the five male students trapped in a brutal underground prison at Hachimitsu Academy. As Kiyoshi and his friends endure increasingly humiliating punishments from the secretive Underground Student Council, the story deepens its blend of slapstick comedy, psychological warfare, and over-the-top fan service. Collecting chapters from the original Japanese release, this installment pushes the boundaries of the series' signature high-stakes, lowbrow humor.