It's crazy how we went from an evil rapist to an emotional farewell with the dad to a room where you can't leave unless you gave sex. But well, let's hope they won't be interrupted and tye ither sisters get their turn too.
Shouldn't Uta wait at least ten minutes after absorbing all of the former demon king's power before having it all sucked out of him by plowing his daughter?
I think the surprise for them really is that it was supposed to be a matter of basic survival for Ibis being a succubus. The thing that would make me think the other sisters are not virgins is, and I'm very surprised about, that they are not fussing about Ibis taking Uta's virginity first