変態マスク 正義の味方はTバック。ってアホな！

The story is set in the prestigious all-girls' school, St. Lapis Lazuli Private Academy, attended only by the chosen few, a desired place of learning...

However, beneath this glamorous garden of maidens, an evil force lurks. Secretly, bullying is rampant. The teachers, to save face, turn a blind eye to the bullying, only thinking of concealing the problem...

Into this school comes a new teacher. Usually an unremarkable physics teacher... but his true identity? He is the masked hero of righteousness, Hyper Justice (HJ)! To hide his identity, HJ dons a distinctive costume and punishes the bullies and vile teachers one by one!