Ryouichi Kitanishi - is a video game producer. Ryouichi Kitanishi began his career in 2004 and has worked for companies such as Intelligent Systems and Nintendo. Ryouichi Kitanishi's first game was Paper Mario: The Thousand-Year Door which was released 19 years ago. Best Game Ryouichi Kitanishi contributed to was Paper Mario: The Thousand-Year Door. Ryouichi Kitanishi's latest work is Paper Mario: The Thousand-Year Door which was released 19 years ago.