Boogiepop Phantom Season 1 Episode 8 She's So Unusual

Single-minded, Nagi Kirima goes through life with only one purpose: root out and destroy the evil lurking in the darkness. A lonely life, but one of which her father would have approved, as his jealously guarded theories forms the basis for her work. While up to now it hasn't been a problem, her pursuits have left little time for a personal life.