sentences:  In a follow-up review of the final volume, she wrote that the conclusion of the series was less confusing than that of Yuki's earlier work "Angel Sanctuary" (1994–2000) and thought the story was "well-executed," though it still had some flaws.Rating the series 3 out of 4 stars, Jason Thompson, author of "" (2007), wrote that while it reminded him of "Angel Sanctuary", it covered "more original subject matter" and had "tighter" plotting.Anime News Network's Casey Brienza highly recommended the first volume, praising her inclusion of Celtic mythology.