監獄学園 [Purizun Sukūru] [Prison School] #22

The twenty-second and final volume of the Prison School manga series, originally serialized in Weekly Young Magazine. This concluding installment wraps up the ongoing saga of the male students trapped in the brutal disciplinary system of Hachimitsu Academy, bringing the story's blend of absurdist comedy, psychological tension, and risqué situations to its ultimate resolution.