* Based on the manga by the same name written by Watanabe Kizuku and illustrated by Aoto Jou, a spinoff series of Matsui Yuusei's Ansatsu Kyoushitsu manga.

In this world, Koro-sensei is the Demon King while the students of class 3-E are cast as heroes who must defeat him. The students learn swordsmanship and sorcery at Kunugigaoka Magic School. Their strange adventure begins!

Source: Official page

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Alternative version: Ansatsu Kyoushitsu (2015)
Prequel: Koro-sensei Quest!