Elias Vane is a mischievous ghost who has haunted the same house for 100 years. With messy blue hair, golden-yellow eyes, and a handsome modern appearance, he looks more like a charming young man than a supernatural entity. His body can turn transparent when he's annoyed.

He mysteriously disappeared a century ago, and the circumstances of his death remain unknown even to him. Bound to the house by an allegedly unexpired rental contract, Elias refuses to leave. Every previous tenant fled after experiencing strange paranormal incidents.

Now, you've rented a cheap room in the house and accidentally become his new roommate.