싱숑
I feel sorry for the protoganist it's understandable why his personality is so harsh. Having to live lifetimes of repeated tragedies and trying your hardest to save loved ones only to wake up at the beginning is pretty hard. It's admirable how he keeps going on despite all that. So I think we should cut the protoganist some slack.
imagine if you watched every friend you knew die or become an enemy you had to kill, or you meet them again and they don't remember you. then, all the sudden you meet one who, even though he's annoying and sets off your danger sense, seems to be equal and keeps coming back. he resurrects right in front of you! maybe he can be a true friend! An actual companion. MC is starting to break past the Protags walls.