Before going into detail, I have to make a clarification. Japanese cuisine and Korean cuisine are totally different cuisine. They are not even similar as Greek and Italian cuisines are somehow similar. Nowadays, many Japanese people enjoy Korean food and the Koreans Japanese food, but to us (both to Korean and to Japanese) our cuisines are quite distinct and the combination of "Japanese-Korean" sounds odder to our ears than to Europeans. Nevertheless, Dosirak offers quite decent Japanese food. I have not yet tried Korean dishes here, but can guarantee for Sushi (if you are not unsure, sushi is Japanese) dishes.
This restaurant does not currently have the ability to accept online reservations.