All Out, All In

"Why do I have to be the one to 'put it in'?" Shun Mizuo has always got a smile on his face. He's popular amongst his coworkers and he's good at his job... but he's useless in the bedroom. One day, heartbroken after discovering his girlfriend cheating on him, he drinks himself into a stupor and reveals his "situation down there" to Amachi, his beautiful-yet-frosty coworker. What happens when, suddenly, Amachi says that she feels that this moment with Mizuo must be fate?! An office romance between two people both hopeless in the bedroom! (Source: MangaPlaza)