Hokai Banya is a donburi restaurant in Tsukiji Market in Tokyo that serves seafood rice bowls topped with tuna, salmon, crab meat, uni, and salmon roe. The five-color kaisendon comes with tuna, uni, and salmon roe together. On weekdays between 10 and 11 a.m. there was no wait to get in, but a wait formed as noon approached. The portions of rice are on the large side.