"Urotsukidoji" is a Japanese adult animated film series that blends elements of fantasy, horror, and eroticism. The story follows a young man named Kagato who becomes embroiled in a battle between humans and demons, exploring themes of power, sexuality, and the supernatural. The series is known for its graphic content and has gained a cult following since its release in the late 1980s. The first film, titled "Urotsukidoji: Legend of the Overfiend," was released in 1987 and is often credited with popularizing the genre of hentai in the West. The series has spawned several sequels and adaptations, contributing to its status as a significant work in adult animation. Its unique blend of genres has made it a controversial yet influential piece in both anime and adult entertainment.