[Ponsuke] Nazo no Tenkousei | The Mysterious Transfer Student (COMIC Koh Vol. 5) [English] {5 a.m.}

I dunno that seems common if you look into a lot ponsuke's works. The girls are virgin but there's no defloration blood (or in the cases where they are it's so insignificant that it looks like shading and the girls really good as if they're experienced. So I say at best it's debatable.

So, he's a virgin... and she was thinking about that marriage promise all that time, but somehow, she got f*cked already(?) {she's got mad skills}, and now she's trying to make him fulfill his promise... "Whatever" Lol!