Ramen Nagi is one of Hong Kong’s most respected tonkotsu ramen chains, often mentioned in the same breath as the legendary Butao. Founded in Tokyo’s Shinjuku district in 2004, the brand expanded to Hong Kong in 2012 and now operates five outlets across the city. Unlike many ramen shops that offer a single signature broth, Ramen Nagi is famous for its four fixed soup bases, Butao (original), Red King (spicy), Black King (garlic), and Green King (basil), plus a rotating seasonal special. This article breaks down everything you need to know before your first bowl.