In Japan, Rokurokubi are known to be like Vampires. They're known to be dangerous Yōkais for committing horrible deeds. Except for one. Asumi Mayoko -- Born a Rokurokubi, now lives a normal life with Karita Dere. Karita takes her time to take care of Asumi ever since that mysterious night where Asumi was found inside a trash can. Asumi has her moments where she's feeling worried about how people feel about her as a Rokurokubi.