Mika (a fudanshi in his previous life) is reincarnated into the world of BL novels as the pathetic son of a villain certain to be executed. In order to avoid death, Mika decides to raise his childhood friend Charles, the main character of the novel, as a "mother" to turn him into a healthy, handsome virgin ! And thanks to his diligent education, Charles grows up healthy. But── "Stupid Mika... I'm going to fuck you one day." ...Huh? Is his educational policy wrong?