The individual began their career as an assistant to a mangaka, describing themselves as "terrible" and "lazy" in this role. Later, they became an H manga artist and experienced moderate success with lesser-known titles such as Angel Dust, Coyote, Gun Mania, and Hi-Tension. Their first major achievement came with the release of their series Hellsing, which was serialized in Young King OURs magazine towards the end of 1997.