Ryoon Chamchi is a tuna hoe restaurant on the basement first floor of M State Building B in Songpa-gu, Seoul. It serves the D course and a dinner course along with chirashi sushi, hoe deopbap, altang, and grilled fish. The chirashi sushi comes with several kinds of hoe and one soy-marinated shrimp on rice, and the hoe deopbap has a generous amount of hoe. Prices are on the higher side.