Kyōnosuke Hiruma is a known alias used by the prolific and highly respected Japanese voice actor Norio Wakamoto. Wakamoto maintains a public career under his real name for mainstream anime, video games, and dubbing, while the Hiruma pseudonym is reserved exclusively for his work in adult anime (often referred to as hentai) and adult video games.

As Hiruma, Wakamoto has voiced characters in numerous adult OVA series from the late 1980s and 1990s. Examples of roles performed under this alias include Suikakujū in the series Urotsukidoji: Legend of the Overfiend, Zack in Cream Lemon Part 4: POP CHASER, Wezma in Luv Wave, Chinen Sō'un in Maison Plaisir, Edwin Black in The Dark Knight Ingrid, and Kohōki in Urotsukidōji II: Legend of the Demon Womb. These credits represent a distinct segment of a long and varied voice acting career that continues to the present day.