Prologue: One step into Melonville.

The Succubus Kingdom went on a brink of collapse, betrayed by the armies of Vampires, Werewolf Lycans, Kitsunes, Minotaurs, Gryphons, Zebras, Caribou, Changelings, Dragons, and the others. Preventing a possible extinction, the council has chosen some of the Succubus members to safety as the Light and Dark Mage transport the members somewhere more hidden and promising to protect them. 500 years have passed after they teleport to safety, the remaining Succubus began to rebuild their Kingdom. That is until they were discovered by some human agents, but they offer an exchange program plan and repopulate solution. Since then, a graduate boy is relocated to an Academy, where he has to deal with a lot of sexy Succubus living in his new home.