Masao Tomosawa - is a video game programmer. Masao Tomosawa began his career in 2006 and has worked for companies such as Konami Digital Entertainment and Konami. Masao Tomosawa's first game was Metal Gear Solid: Portable Ops which was released 17 years ago. Best Game Masao Tomosawa contributed to was Metal Gear Solid: Portable Ops. Masao Tomosawa's latest work is Metal Gear Solid: Portable Ops which was released 17 years ago.