The protagonist, Taichi Amano, who possesses "Awakening Miasma," has had sex with many demi-girls. As a result, his power evolved, and he was chosen as the marriage and child-rearing partner for the leaders of the demi-human races: Hathor of the Divine Cow Tribe, Astraea of the Fairy Tribe, and Aruru of the Holy Unicorn Tribe. Moreover, due to a racial characteristic, he seems to lose romantic feelings for anyone other than his marriage partners!? The three women press him for more and more sex——. An unprecedented, intense, and erotic struggle over the protagonist begins.