Responses
I think he stopped being a playboy bc he fell for that bitch... And he probably doesn't know much about history etc bc he was too focused on physical training to become a Knight since hes probably from a lower side of barons
I read a spoiler that he and the heroine are both reincarnators but he had no knowledge of the game and the heroine did
Oooooh that's a bit more interesting than my theory hahah
Has cadio also reincarnated or something? Like he died in his previous life and woke up to see that he is in cadio's body in an unknown world. That would explain why he is not a playboy anymore and why he doesn't know basic history that everyone knows. Or maybe I am reading too much into it.