"I'm a Natural-Born Dirty-Minded Masterpiece!" An ordinary guy with an over-the-top talent for sex is studying how to be lovable outside the bedroom to maintain a long-lasting relationship! Masato Bonda, the epitome of "ordinary," believes he has no talents beyond sex, yet feels overwhelmingly adored by his high-spec, handsome boyfriend, Daiki. He's convinced it's all thanks to his "charm down there," and their nights are filled with passionate encounters. However, Bonda begins to worry that as their sex drive fades with age, Daiki might leave him. Determined to find talents beyond sex, Bonda works hard to discover new ways to keep their love alive. But instead of improving in other areas, he finds himself falling even deeper into the traps of passion...?!