Kanmonkai. 

KANMONKAI Co., Ltd. functions as an international culinary enterprise, specializing in the development, operation, management, and franchising of restaurant venues. The company manages both its own establishments and franchised locations, primarily recognized by the "Genpin" brand, across Japan and in various global markets. Beyond its core hospitality activities, KANMONKAI also handles the procurement of ingredients and provides business development services. Established in 1980, the company was formerly known as Sakanatei Co., Ltd. before officially adopting the name KANMONKAI Co., Ltd. in March 2001. Its corporate headquarters are situated in Matsubara, Japan.