The SoulTaker (2001) watch online

The SoulTaker (Japanese: THE SOUL TAKER 〜魂狩〜, Hepburn: Za Sōru Teikā ~Tamashii Gari~) is an anime series that focuses on seventeen-year-old Kyosuke Date who was killed by his mother Mio Date, and afterward gained the ability to turn into an incredibly powerful winged mutant known as "The SoulTaker" and that he has a long-lost twin sister named Runa, and that his past is all a lie.

The series was directed by Akiyuki Shinbo and was Tatsunoko's first anime to utilize digital animation as well as the first anime to be broadcast on high-definition television, and features a seven-episode spinoff OVA miniseries featuring the character Komugi titled Nurse Witch Komugi, albeit Shinbo did not return to direct the OVAs.

Source: Wikipedia (CC BY-SA)