hmm just reviewing, i think otona keikenchi is the best yaoi manga ever. i'm not saying high, the art is very good, and the story isn't mainstream. You know, girly uke, or seme is tall, is too mainstream. In Otona you can find uke with cool face and its my first time to read yaoi manga which seme has cute face and shorter than his uke. So i recommended you to read this manga.