Horny teenager that's just discovered Manga sex?!?! Can't you read it yourself and find out.
Surely you can find better things to enjoy than manga sex.
I'm not sure which chapters they are, but the side story at the end of BR volume 3 and most of volume 8 have what you're looking for.
Boy, just go out and grab some doujinshi... and you didnt hear it from me but...