Nightwalker (1998)

Shido Tatsuhiko is not only a private eye . . . he is also a vampire with no real memory of his past.Joined by Yayoi Matsunaga,a female goverment agent,Riho Yamazaki,an orphaned teenage girl working as his girl friday and Guni,a little green imp,Shido must face demonic creatures known as Nightbreed.Meanwhile,Cain,the vampire who made him what he is now,is seeking him . . .