Shin Shinka no Mi: Shiranai Uchi ni Kachigumi Jinsei

After the Fruit of Evolution transforms Seiichi Hiiragi's life and gives him abilities beyond anything reasonable, the principal of Barbador Academy of Magic invites him to work there as a teacher. The awkward surprise is that Seiichi's former classmates from Earth are students at the same academy, including people who knew him when he was the boy everyone mocked. Facing them again as a completely different person is not a reunion he has prepared for.

A larger problem is moving in secret. The Great Devil Order plans to sacrifice the academy's students to revive its deity, turning Seiichi's strange teaching job into a fight to protect the school. His absurd power may be enough to defeat enemies, but it does nothing to make the chaos surrounding him any more sensible.