Nagahama Mangetsu Gwangalli is a Japanese ramen restaurant in Gwangalli, Busan, serving rich tonkotsu ramen, yaki ramen, and gyoza. The tonkotsu broth is boiled for 36 hours, and thin noodles are chosen from four levels of doneness. At the open-kitchen bar counter, diners adjust the flavor with whole garlic, sesame, and spicy sauce, and handmade cream cheese comes after the meal. There can be a wait.