Manga by author Sakurakouji Kanoko

From Viz: There is a world of myth and magic that intersects ours, and only a special few can see it. Misao Harada is one such person, and she wants nothing to do with magical realms. She just wants to have a normal high school life and maybe get a boyfriend. But she is the bride of demon prophecy, and her blood grants incredible powers, her flesh immortality. Now the demon realm is fighting over the right to her hand...or her life! Black Bird received the 2009 Shogakukan Manga Award for shoujo manga.

From Summer-Rain:The story unfolds in the Edo era in the Yoshiwara red-light district of Tokyo. Akane a girl whose family is from Samurai is sold to a brothel to be orphaned. To be the "little sister" of the "lady" No 1 spot. This will bring a client ask, then she meets a stranger very peculiar man. What will happen after that meeting?