 If you liked
Mushoku Tensei: Isekai Ittara Honki Dasu
|
 ...then you might like
Overlord
|
Guy gets transported into a different world and as it show out, he is absurdly overpowered, to the point he alters the fate of the whole new world. While the protagonist of Mushoku Tensei isn't so evil as in Overlord, he is kind of selfish and pursuing own interests and as it is later shown, has the potencial of doing evil.
Both really make you feel like you are living in the world. Both MCs reincarnate with all there memories intact finding they are inhabiting a fantasy world. Both find they are rather OP for this world except one a bit more so than the other. They both also use there knowledge from there previous life to help them in this fantasy world. Finally both change, living a much different life in the new one they have been given however while both have good intentions one changes for the better and the other. For much much worse.