Great, he's gone crazy. Is he going to keep up with this "i'm not myself" and "my own plan thought up by my current self is wrong because it's my current selfs plan, not my current selfs" nonsense.
does this manga not know it's own story??? His "future self" didn't travel back in time and give a plan to his "younger self", his "future self" went back in time and REPLACED his "younger self", there is only one person, himself, he IS the "future self", what the fuck author? It's only the second chapter and you already forgot the basis of your own story???
From the other comments apparently the stat thing thats only newly discovered in the future is also perfectly normal in the past, so I guess the author DID somehow completely forget the very basis of their own story, what the fuck?