>>281303274
>I have seen plenty of Manga that managed to showcase an orgasm without showing genitals, sex without showing even a nipple have been a thing not just in Manga but movies too for decades.
>If they don't do it here, it hasn't happened.

And I've seen a number where its simply implied. Until some character or other source clarifies one way or another we can't say for sure.

>Plus him looking scared all the time is a turn off and realistically it would be for the girls too.

Usually he looks overwhelmed more than scared, and the girls take it as a compliment for how attractive he finds them.