Makaryuudo Demon Hunter is an 80's manga by Keukegen. It was adapted into a 1989 OVA by Studio Fantasia and director Yukio Okamoto.
A powerful demon girl named Yama, punished by a crime against the laws of the underworld, is sent to the human world to hunt rogue demons. In her first assignment, she goes to Japan, the home of a certain Ordinary High-School Student named Sho Kurogane that unknowingly has a connection to her troubled past. Posing as a high school girl herself, Yama will have to endure the quirks of the human life while remembering her dour mission to keep the cosmic balance.
Nowadays mainly a curiosity.
This work provides examples of:
- Betty and Veronica: Kaoru is the Betty and Yama is the Veronica to Sho's Richie.
- Power Floats: Yama can levitate as part of her powers, and when pressed for time uses it to skip those boring stairs.
- Reincarnation: Yama and Sho were lovers in a past life. Her crime was precisely using her power to discover his new identity.
- Shout-Out: Given Yama's appearance, powers, nature, personality and role, she resembles a combination of Lum and Sakura from Urusei Yatsura.
- Sinister Scythe: Yama's signature weapon, which seems to be created from her hair.