Hina Nanase appears in a magical girl story, manifesting as a being who grants men's wishes, using her powers to make various fantasies possible. However, the wishes turn out to be surprisingly erotic—men demand she serve their cock. Hina dutifully fulfills their requests, diligently jerking them off with her hands. As a result, the men quickly reach climax. But Hina, claiming semen is "the source of life," catches their cum in her mouth and swallows it down. Through this act, she transforms from a magical girl into a demon clad in black. Evolving into a succubus, she becomes a being who drains men's vitality.