This is one of two ramen joints in town that are worth visiting: Monta and Fukumimi. The tenderness of their pork belly is amazing and really makes the dish. Their tonkotsu (pork) broth is my favorite, especially if you get it with their special called kuro ramen (black ramen) which adds a black garlic sauce.
Fukumimi doesn't have nearly as good char sui (braised pork belly slices) but I think their broth is slightly better.