This is fun and all, but if the hero was real, she'd actually be a really terrible person, is something I've found myself thinking. Not that that's atypical in manga or anything.
I guess the biggest question is why she’s even considered a hero...even her mom finds her annoying — she’s just a lonely girl with a sword that wants to annoy demons because at least they’ll give her attention (by force)
I would be really pissed off if they end up together AND she doesnt change. Even if it is only a gag manga. Best if the hero become a decent person but i dont have much hope for that...