He's pretty dense but who can blame him considering what she did to him in chapter 1, i'd never trust a girl who did that to me or believe she'd hold any positive feelings for me
Interesting that the actions of the characters can change during re-loads without the MC's influence or could be the butterfly effect of him saving the sword girl.
"have to prove blond hair is natural" surely if they see a white person they realize that they have blond hair naturally since its most common among them, or are you telling other races who somehow have blond hair need to prove its natural?