That's what I was thinking. But I think it's more like, if both parties wish it while doing the dirty it can happen to either one. I think at one point he thought about it by accident and it happened by the off change. But I'm kind of with him on this, like he's from Earth, in his mind there was no way it could have happened. I don't think he should pay anything because, first he didn't know this whole time and second, on Earth, where he is from, it is impossible for this to happen, so he never thought about it. So you can say, "you decided to open your legs so you get the consequences of it." It can't be like that because he literally, at that time, knew it was impossible.
This is so hilarious. Tho i feel like being pregnant without mc's permission was a bit unfair, cus he said in their society's standards being pregnant is like something that can be done at will? And if it is done without permission of the other party it's considered assault or something