Kinjirou Sakamachi developed a tough physique to withstand severe punches, forceful kicks, and even dangerous car impacts in order to survive their different grappling positions and locks, thanks to his mother and sister, who also adore professional wrestling. He did, however, acquire gynophobia, or an excessive dread of women. With a single touch from a lady, his nose bleeds incessantly, he sweats profusely, and in rare circumstances, he faints. Because of a fateful meeting in the toilet, his life takes a turn for the worst. While attempting to avoid a girl, he finds that the most popular student at their school, Subaru Konoe—the butler of the headmaster's daughter, Kanade Suzutsuki—is actually a girl! Subaru, taken aback, hits Kinjirou forcefully, causing substantial damage and putting him unconscious.