"Let's start from here. From scratch... No, from erotic!" Spell, a male student with an extraordinary sexual prowess, gets lost in another world and meets two maid sisters who have lost their horns and cannot survive without regularly replenishing their penises. Using the power of "Iki-Return", which allows him to cum and rewind time, Spell experiences repeated loneliness and ejaculations in order to save the sisters. In order to regain the irreplaceable orgasm that he was sure he had...