A young Taiwanese assassin codenamed "Glass Heart" committed suicide by jumping off a building, and her heart was pierced by metal fence. Miraculously, her life was saved by heart transplantation. During her recovery she began to experience strange dreams, which lead her to Japan looking for the donor of her heart, who happens to be Kaori Makimura, former partner of City Hunter Ryo Saeba.<br><br>
The author mentioned in the first tankoubon volume that Angel Heart only shares the same characters of City Hunter but not it's continuation. The events are all parallel universe, therefore it has nothing to do with City Hunter. (Source: Wikipedia)

Non-anime roles:
~!Bill in "Kill Bill 2" (live-action movie) (Japanese)  Bill in "Kill Bill" (live-action movie) (Japanese)  Dr. Wonka in "Charlie and the Chocolate Factory" (Japanese)  Saruman in "The Lord of the Rings: The Fellowship of the Ring" (live-action movie) (Japanese)  Saruman in "The Lord of the Rings: The Two Towers" (live-action movie) (Japanese)  Slayer in "Guilty Gear XX" (VG) (Japanese)  Zophar in "Lunar 2: Eternal Blue" (VG) (Japanese)!~

Dr. Sheckley