Ayashi No Ceres :

Genres: Action, Adventure, Love – Romance, Shoujo, Supernatural, Psychological, Horror
On their 16th birthday twins Mikage Aya and her brother Aki are given a “party” by their grandfather. What they think is a birthday party is really a test to see if Aya hides within her the reincarnated spirit of an angry tennyo (heavenly maiden) looking for her hagoromo (robe the tennyo needs to get back to heaven) that was stolen from her by her husband generations ago. Aya does, and later has no recollection of the havoc she wreaks during the “party” nor that her alter self has recognized her twin brother as having the spirit of the husband that stole the hagoromo so long ago. Aya runs from the family that now is hunting her.
This anime has bloody violence, nudity and language. I give it an “R” rating. I really liked the story line in this one. Although it does get a little weird at times.
There are 24 episodes in this series