Koku Ryu Ramen is a Japanese-style ramen shop in Wan Chai run by a Japanese owner. Its black dragon pork bone ramen has a rich broth and soft chashu, while the beef tendon black ramen features black garlic oil and well-cooked beef tendon. The shop opened in 2014 and has operated for over ten years, with lines often forming at the entrance. The pork bone broth is strongly seasoned and on the salty side.