Try_hard
It would be better to have a protagonist that when reborn in an anime world, knows the events that are going to happen, but doesn't know the reason (since he sacrificed his memory for more power), and it would be just a suggestion, that he is not so friendly with the protagonists or those he knows in that world xD (people prefer one that only cares about him and his girls). - and regarding the rewrite, you can start with the first world and delete the rest (so you don't make another one that you don't know if it will be better).