Kazumasa Koura, also known professionally as Imoaraizaka Kakaricho, is a Japanese actor and comedian born December 18, 1967, in Fukuoka Prefecture. While his career includes work in live-action film and television, information regarding a substantial body of work specifically as an anime voice actor is extremely limited. His background includes training as a dancer, and he has performed as a backup dancer for Japanese pop stars. He is also recognized for his skills in caricature drawing, tap dance, and impersonations.

Koura's most clearly documented role in an animated project is Kazuo Itō in the 2020 film Ganbareiwa!! Robocon: Urara~! Koi Suru Shiru-Nashi Tantanmen!! no Maki. In this film, he voices a Chinese cuisine chef. This feature is an entry in the long-running Robocon robot comedy franchise.

There is no available information regarding recurring collaborations with specific animation studios, directors, or fellow voice actors. Outside of the Robocon film, no other notable achievements or recurring roles in the field of anime voice acting have been documented. The available public records for Kazumasa Koura pertain almost exclusively to his work as a live-action television and film actor, with roles in productions such as Mischievous Kiss: Love in Tokyo and Kamen Rider Revice.