Sexless Friend vol. 1 (18+ manga) >Out of Print<

Although by all appearances Tsukasa Suo lives a charmed life as the local babe-magnet, due to certain circumstances, he has had absolutely zero experience with women! Wanting desperately to stop being such an innocent as soon as possible, he teams up with the equally inexperienced new professor, Mikoto Himenomiya, so they can “study” how to overcome their nervousness in the presence of the opposite sex.