Black Bird Vol. 1 (manga)

Everything changes one day when Misao is attacked by a demon. Her childhood friend Kyo suddenly returns to save her and tend to her cuts--with his tongue! It turns out Misao is the bride of prophecy, whose blood gives power to the demon clan who claims her. But most demons want to keep her power for themselves--by eating her! Now Misao is just trying to stay alive...and decide if she likes it when Kyo licks her wounds.