Newbie office worker, Harumi, lives together with her supernatural roommate, Kurogane. Harumi's days living beside Kurogane are enjoyable, peaceful, and a natural part of her everyday life. That is...until he suddenly disappears?! And while he's away, Ao, another supernatural being asks Harumi if he can move in with her, too...! A heartwarming, whacky romance between a human and a supernatural being living under one roof is at your doorstep!