Kousoku Syndrome

I know it's just work. I know that. But still... I feel so much pleasure right now.
Masumi, an earnest and hard-working high school student, ends up taking a job as the assistant to a hentai mangaka named Ootomo in order to help his single mother out with his college fund. He quickly gets roped into modelling for various perverted scenes that Ootomo comes up with for his manga, and finds that despite his initial reluctance, he doesn't mind being touched by Ootomo at all...