"Glass Heart" is a female member of the dreaded "Suzaku Unit", an elite corps of Taiwanese assassins who have been raised since childhood to be heartless killing machines. At age 14 she is congratulated for her fiftieth successful hit, but she has become painfully disillusioned with her line of work and leaps from the roof of a building. But the Suzaku Unit isn't ready to let such a valuable member go so easily, and are willing to take extraordinary measures to save her, including the theft of a transplant-compatible girl’s heart from the streets of Japan. Glass Heart finds herself somehow in contact with the spirit of her heart's previous owner, and cannot resist the urge to search for this woman's lover...
(summary from MIKOMI)
Info: TV Series, 50 episodes, on air from 04.10.2005 till 26.09.2006