Momonga is reincarnated into Yggdrasil as his player character, but instead of a skeleton/lich, he is a generic "demon lord" character, and his libido is intact. Most of the male mainstay characters have been gender-swapped to female (Demiurge, Cocytus, Mare, etc.). Basic retelling of the anime but with the gradual formation of a harem for Momonga.