Angel Sanctuary in Japanese Tenshi Kinryouku is a Manga by Yuki Kaori It is about fights between heaven and hell,Angels,Fallen Angels,Demons and Humans that from one day to the other are pulled into a whirl of happenings influenced by their past and former lifes.But not all Demons are bad and the Angels aren't always good.Also it's not a rarity that someone who at first sight seemed to be a friend later turns out to be an enemie.There is a huge number of Characters that appeare in the Manga which sometimes makes it a bit hard to understand and follow the plot.The main Character of Angel Sanctuary is Setsuna Mudou a 16 year old Highschool boy who's the reincarnation of Aleksiel,an Angel that long ago joined the Demons and rebelled against god and he is in love with his blood sister - Sara. There are a lot of sideplots and everyone seems to follow his own goals