Murai was born to Japanese popular music composer Kunihiko Murai. He moved to Los Angeles when he was nine years old. He graduated with a degree from the USC School of Cinematic Arts.
After graduation, Murai turned to freelance work as the director of photography for numerous music videos, as well as VFX and storyboarding, most notably for Ace Norton. After some time Murai began to direct low budget films.