In Ryogoku Kokugikan, however, almost all the masuseki have been graded as 'excellent,' and provide people with a good view of the dohyo, but these are monopolized by 20 sumo-jaya restaurants (tea houses located within the facility) called 'sumo annai-jo' (sumo information offices).
ところが国技館では、一般に「良い枡席」と考えられている枡席のほぼすべてを「相撲案内所」と呼ばれる20軒の相撲茶屋が占有している。