The SoulTaker: Tamashii-gari - episode 5 - 04 May, 2001

Kyosuke decides to infiltrate the Kirihara Corporation's base so that he can save a Flicker named Kasumi. Meanwhile, Shiro heads to the core of the base with the intentions of destroying the Flicker Searcher. Kasumi and Kyosuke were attacked and separated from each other. Kyosuke goes into a room where the director of the Hospital, Dr. Richard Vincent, awaits him. He transforms into the winged mutant "SoulCrusher". In a heated battle, he reveals that he is Kyosuke's father and that he was betrayed by Tsubaki Tokisaka, his own wife, to the Beta Applicon Project even before she gave birth to his children- Kyosuke and Runa. (Source: Wikipedia)