Masao Maruyama is the executive producer for Supernatural: The Animation. Outside of the Supernatural franchise, he has worked on and produced various other projects such as Perfect Blue, Ninja Scroll, Nana and much more.
Supernatural Wiki
Masao Maruyama is the executive producer for Supernatural: The Animation. Outside of the Supernatural franchise, he has worked on and produced various other projects such as Perfect Blue, Ninja Scroll, Nana and much more.