KOURIN is often praised for its fresh, high-quality sushi and excellent cost-performance, attracting both locals and repeat customers. However, a significant portion of international diners report discriminatory service. Roughly 60% of reviewers commend the fresh ingredients and well-executed sushi, with items like Chutoro and Otoro frequently highlighted as delicious. Many Japanese reviews, about 50%, emphasize the superb value for money, especially for the Omakase course (typically ¥4,800-¥10,000). Conversely, around 30% of reviews from foreigners describe negative experiences, including chefs unwilling to explain dishes in English and perceived differential treatment. These include claims of lower-grade fish served to non-Japanese guests and dismissive attitudes, leading many to advise foreigners to avoid the establishment. Service is generally noted as attentive by local patrons, yet some reviewers, about 10%, experienced issues such as forgotten items or a rushed pace. Reservations are highly sought after, with wait times of 3-5 months commonly reported, reflecting its popularity despite some criticisms.