Senjai Ryoku is a Japanese ramen restaurant in Sinsa-dong, Gangnam-gu, Seoul, serving himu ramen and shin ramen. The signature himu ramen uses thick, firm noodles in a rich broth, and the flavor can be changed with grated garlic or kelp vinegar. On a weekday at noon, the wait was 10 to 15 minutes, and rice can be added for free. The space is small, so sitting together in a group is uncomfortable.