I’ll Retire After Saving the World

Normally I don’t start almost anything that has less than 4.5 stars.
Fortunately, I made an exception here.

First of all, you shouldn’t expect an action story with an OP Mc who wants to save a world full of dungeons on his own, it’s more about the teacher-student relationship and the development of his students.

In his childhood, the Mc was a test subject of the organization Ark, which serves as an antagonist.
He was rescued and adopted by a famous hunter. As a civilian dungeon manager, he later experiences the usual end of the world through dungeon breaks.
However, a mysterious artifact transports him back in time and he now tries to use his knowledge to change the fate of other people and prepare the world for the end.

He is surprisingly hired by his adoptive father as a teacher at the newly founded provisional school. Over time, he is given more and more tasks but never a pay rise.

Others criticize in the comments that he wears an anklet and is poorly paid.

But on the other hand, he suddenly appears out of nowhere, has extremely valuable knowledge and he himself wants to support his adoptive father who means a lot to him.

The story unfolds slowly, but I like the concept of the Mc existing twice in the world. I think it gets exciting when the two will meet for the first time.