, also known simply by the nickname IGA, is a video game designer and former producer of the Castlevania video game series. He is best known as the assistant director of , his first major involvement in the Castlevania series (he was partially involved in and is listed under "Special Thanks" in the ending credits). He served as producer on the series between Castlevania Chronicles and . He has been involved in other titles such as the Japan-only RPG Elder Gate and Nano Breaker and the dating sim Tokimeki Memorial.