Wait so like is the dad a REAL Demon or they're just saying hes like a demon instead of a monster? Just double checking cause if he really is a demon then she's at least half and would sorta explain her intelligence a little
Personally, I think it's good world building when most of the side characters aren't stupidly weak and need the MC to fix all their problems. I mean yeah he gave a boost but that's their hard work too. And the sister? She's reacting like a normal person worried about her brother that was in a...