The MC feels like such a dumbass. He keeps yakking on about shit like "you only have sex with people you like" and treasuring your virginity as if that's supposed to be common sense in the isekai. It's like, why would you assume people would know about dating culture in your world when there seemingly is no such thing as dating culture in this world? (Logically speaking you'd think there'd be a lot more homosexuality since people would be seeking romantic intimacy even if their preferred gender isn't around, but we've seen no sign of that so far.) The only explanation is that he's under the impression these kinds of things aren't cultural tropes but rather something universal and natural, i. e., he's a dumbass. Also, can you stop acting like a pure maiden when you told that other chick to shit herself just to be a dick? Man, he's such filth.