ANGEL SANCTUARY (Tenshi Kinryoku), by Kaoru Yuki. First published in 1994 and first published in North America in 2004.
PLOT:
It would be an understatement to say that Setsuna is a messed-up kid. Not only is he constantly fighting with his classmates, he harbors a deep and shameful love for his younger sister, and now he's caught up in a literal holy war between heaven and hell. Setsuna is the reincarnation of a powerful angel and both sides want his power for themselves and both are willing to hurt others in Setsuna's life to get their way.
