Masu Maki & Sushi Bar is a small Japanese restaurant on Sukhumvit 39 in Phrom Phong, Bangkok. It serves futomaki, California roll, Dragonfly roll, and tuna belly nigiri, and makes fried rice with rice brought in from Japan. Green tea comes with refills, and seats fill quickly, so booking ahead is advisable. Because the shop is small, waits during busy hours can run about 45 minutes.