Staz Charlie Blood, an authoritative and mighty leader in the Demon World, showcases a paradoxical nature as a laid-back vampire who shuns human blood in favor of a fascination with human traditions, especially those from Japan. When an adorable human girl named Fuyumi Yanagi stumbles into his realm, Staz seizes the chance to delve into her knowledge of human society. However, their exchange is interrupted by a rival demon challenging his dominance. After swiftly dispatching the challenger, Staz returns to find that Fuyumi has been devoured by a carnivorous plant during his absence. Despite this tragedy, Fuyumi lingers as a ghost in the Demon World, devoid of the human charm that captivated Staz. Driven by a newfound purpose, Staz embarks on a quest to resurrect Fuyumi's physical form, prompting a journey to the human world—a place he has longed to visit. Joined by Fuyumi and their companions, their whimsical and perilous adventure is on the verge of unfolding.