Koi Ramen Apgujeong is a Japanese ramen restaurant in Apgujeong that serves tonkotsu ramen and mazesoba. It also offers spicy ramen, jiro ramen, and gyoza, and customers can choose how firm the noodles are cooked. The shop is small with many bar seats, and rice is added free of charge. The tonkotsu broth is rich but on the salty side.