I read a manga once where I think he was a great swordsman in the past but when he has reincarnated the gods kept his memories since having then would be bad.

I don't remember much only that there was a dungeon, where he defeated a demon.

Something about one of the members from the dungeon raid team needing help teaching a class so he goes there and frightens the students. He knocks the two noble bullies down a notch.

That's all I really remember. If someone could assist me I would be grateful. I really liked reading it so I hope it can be found again.

Nidome no Jinsei wo isekai de

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~4400 manga completed
~1700 ongoing...

If necessary, remake thread without a useless poll

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A just ruler amongst tyrants