Just days before his birthday, high school student Edron receives a bizarrely "empty" present: a mysterious box. Little does he know that when he finally opens it, he isn't revealing a void—he's unlocking a brand new destiny. From that day forward, Edron's ordinary school life completely shatters. Wolf Girls, Wizards, Fairies, Demons... Beings that only exist in myths and legends begin stepping into his world, bringing with them the most fatally sweet trouble. Caught between the entanglements of magical races and the fierce challenge of a rival in love, can Edron protect the predetermined romance he shares with his one-of-a-kind Wolf Girl?