Ginza Ryoko Shin sa Main Branch is a Japanese restaurant near Sinsa Station in Seoul that serves tonkatsu, katsudon, and curry rice. The tonkatsu is thick meat fried until crisp and served with demiglace sauce, and the menu also includes beef spicy curry rice and katsudon. Orders are placed at a kiosk and food comes out within 10 minutes, and bar seating looks onto the kitchen, which makes it easy to eat alone. The main branch building also houses the company's main office, training center, and headquarters office.