After being defeated by the hero, the Demon King flees and finds himself in a deep forest. Battered and shrunken to the size of a kid, he faints, expecting to die right there on the spot. However, as luck would have it, a dark-skinned elf discovers him and nurses him back to health. But, the elf could no longer suppress her maternal instincts and started pampering the tiny Demon King until he melted away... The two of them eventually began to indulge in each other's bodies...