The protagonist, an over-the-top military otaku, fulfills his obsession by becoming a soldier—only to die in battle. By sheer luck, he successfully reincarnates into another world. Hoping to achieve military success once again in his second life, he becomes a knight— only to discover that this new world is a reversed-chastity society, where men are the ones sexually targeted!? Armed with modern military knowledge, the protagonist aims to rise to glory in this other world. Standing in his way are countless beautiful girls driven by every imaginable fetish, all after his body! Can he fend them off and seize true glory amid constant temptation and danger—!?