Under pressure from his over-ambitious sisters, Wataru Temae has developed a deep hatred towards women and sex. One day, he saves a sea slug that had been abandoned in the river, and it turns into a human girl and returns the favour! ! Neno, a nudibranch girl who doesn't know anything about the earth like a mermaid princess, asked him to return the favour... x x x! A cross-breeding (!?) between a sea slug girl and a misogynistic boy! a cute erotic anthropomorphic rom-com!