Released on , the OVA was originally bundled with the limited-edition 20th volume of the Prison School manga. While many anime specials are filler, "Mad Wax" is canon , adapting chapters 82 through 89 of the original manga by Akira Hiramoto. The Plot: Roles Reversed
Kiyoshi, Gakuto, Shingo, Andre, and Joe adjust to life outside the prison block. While most attempt to interact with girls, Joe finds himself missing the isolation of prison and actively tries to get sent back. prison school ova