You know, usually, isekai manga, when there's a scene like that, they just tease it. The moment any penetration is about to occur, the protagonist always comes in and saves the day. This time around, though... Damn. Author pulled no breaks. He went all the damn way (wasn't that, like, triple penetration? And, if you take her words literally and count all the holes... God, no.). Yeah. There's a reason why most authors stop scenes like this half-way.