Urotsukidoji: Legend of the Overfiend 1989 (movie)

Legend has it that the human race is not the only dominant civilization living on this planet. Two other races exist nowadays: the Makai (a demon race) and the Juujinkai (1 / 2-man, half-beast race). Once every 3,000 years, a supreme being referred to as "Choujin" (Overfiend) will emerge and provide good all three realms in the world. In present-day Japan, after 300 numerous years of endless searching, a Jujinkai named Amano Jyaku has discovered the presence of the Choujin inside high school graduation slacker Tatsuo Nagumo. However, Amano - in reference to his sister Megumi along with their sidekick Kuroko - must protect Nagumo and his new girlfriend Akemi Ito in the Makai, who think that Nagumo isn't Choujin, but an evil entity bent on destroying all living beings on this planet.