Is it*
Just lack of experience dealing with the normal folks. He never really even studied, all he learned from the knight in the forest was the basic and swordmanships. So hes kind of, playing catch up right now.
I mean he grew up in a forest/jungle raised basically by animals and one old man as a teacher he had no human interaction
Did you not read the first few chapters ,dude literally grew up in a forest with the only interaction with a human being his teacher.lol(￣∇￣")
Is if autism or is he just socially stunted.