Sanzigen is a CG animation studio located in Suginami, Tokyo, Japan. It was established by former Gonzo CG director Matsuura Hiroaki in March, 2006. The number of employees is 21, additionally there are two affiliated freelance modelists. Matsuura Hiroaki is also acting as the current representative director of the studio, furthermore Suzuki Daisuke and Katou Yasuhiro are directors. The field of work includes aside of producing CG animation and models for anime, a lot of CM work.