The is not a throwaway extra. It is the soul of the series distilled into a frantic, sweaty, silent heist movie. It has the highest "laughs per minute" ratio of any episode in the adaptation.
The single Prison School OVA episode was released on . It was not broadcast on television. Instead, it was a bonus item bundled exclusively with the limited-edition 20th volume of Akira Hiramoto's original manga. Running for approximately 25 minutes, the OVA adapts the six-chapter "Mad Wax" story arc, a canon side story from the manga. prison school ova
: Feeling lost without the structure of prison, Joe becomes desperate to return. He attempts to commit a "crime" so extreme that he will be sent back to the isolation of the prison block. The Locker Room Incident The is not a throwaway extra