Kishin Douji Zenki Gaiden: Anki Kitan
Japanese title: 鬼神童子ＺＥＮＫＩ外伝　黯鬼奇譚
Type: OVA
Episodes: 1
Source: Manga
Genres: Action, Supernatural
Studios: Studio Deen
Duration: 29 min
Rating: R+ - Mild Nudity

In Kanoesaru village every 60 years mysterious murders happen. Every time seven 17 year old girls are killed. The villagers believe it is the work of a demon who once saved the village so they keep quiet about it. However the current head of the Ibuki family calls an exorcist to save her 2 daughters. What is the truth behind the murders in Kanoesaru village?

(Source: AniDB)