Sera, a sexually curious salary, has newly set his sights on Ryo, a new employee at his favourite bar. He tries to talk to him about sex, a new kind of pleasure, but Ryo is popular with men and women of all ages and has a lot of experience. But he can't catch on, and when he pesters him, Ryo gets mad and teaches him about the pleasures of the backside... 性への好奇心が旺盛なリーマン・世良が新たに目をつけたのは、行きつけのバーで働く新人店員の遼だ。老若男女問わずモテ、経験も豊富だという遼から新たな快楽を得られるセックスの話を聞こうと試みる。　だけどなかなか釣れず、しつこくつきまとっていたら、キレた遼に実地で後ろの快感を教え込まれてしまい…!?