Boku wa Subete wo ShitteiruI've Seen It All; 僕はすべてを知っている; 나는 모든 것을 알고 있다

From TerribleTrio: Saikawa is one of the top physicians in his clinic. His specialty? Penises (no, really). Everyday, he helps out males who suffer, and only sees ugly penises. Thinking there are no truly beautiful penises left in the world, he wanders around depressed until he crosses paths with Asano, the beautiful cell-phone store clerk....?!