This manga is a pretty standard travel back in time to fix my fuck ups manga but it diverts in two areas. The first is pretty stupid, the MC doesnt die or get sent back by some item/monster but he does it himself with his own power. This I found kind of funny and stupid because the reason he goes back in time is because he found out he wasted his life researching magic in the category he had the least potential in and therefore would forever be weaker than his competition. ... but he can manipulate time xdd The second way it diverts is thatthere was really no goal other than to be stronger and study magic that suits him in his second life. And this doesn't really provide much leverage story wise and basically just ends up as shit.

Manga is fine and enjoyable fluff if you want a quick read thats action, harem, isekai. Its ok nothing special