Sick of so much anime/manga have these lazily inserted traps just for cheap gags.
"Lol that girl is a guy" Yeah, that guy who is drawn as a girl, looks like a girl, has a body shape of a girl, and has a female voice is a guy. It's super lazy nowadays, with the return of "lol you gay".
@ma_ko, so far in the light novels(novel 9), Horitika has not shown a hint of dere. Not even the added part in the anime.
It's just not in her character to be like that. Maybe later she might, but so far it's a no.