@raos044 it's wrong because the MC suspects already that she can see things, so he want an affermative answer to confirm his suspect, so the question should be "Can you see things that ordinary people can't?", or better in the context for me "you can see things that ordinary people can't, right?".
@Akikako that question has the same meaning just is usually more polite
@RanTomoki well, they hit puberty, so his interst is nothing really surprising. and becouse he sees her as a slave, it's easier for him to order her to do something for him instead of asking his parents/teachers/whatever
@Willie29 he doesnt have the regular magical energy of the world he's in right now, but he can use his old power probably coz hes a youkai tamer so the power he had previously was spiritual power, and that shit is engraved in the soul, so he wont lose it even if he reincarnates