Maguro Jun serves tuna hoe and tuna set meals near Hoegi Station and Kyung Hee University in Dongdaemun-gu, Seoul. The all-you-can-eat option brings repeated refills of different tuna cuts, along with corn cheese, braised saury, grilled fish, rice with fish roe, bean sprout and pollack hangover soup, and fried shrimp. Reservations by phone let you choose between a room and the hall, and leftover tuna is packed for takeout. The hall is on the noisy side.