As the international expansion of Korean franchises grows, understanding the key criteria that significantly influence local customers and incorporating them into services has become increasingly important. This study collected 104,010 reviews from various Korean foodservice franchises in the United States via Google Maps, spanning from 2010 to August 2024. After preprocessing, 76,826 reviews were analyzed to identify customer selection attributes and classify them into quality attributes based on the Kano Model. The analysis employed TF-IDF, topic modeling, sentiment analysis, and linear regression to extract selection attributes across three categories: Cafe&Bakery, Chicken Specialty Restaurant, and Other Full-Service Restaurant. Notably, new selection attributes were identified, including Korean-style chicken, novel food experiences, and Korean food. all of which were classified as attractive qualities (A) under the Kano Model. Across all business types, ‘kindness’ consistently emerged as a one-dimensional quality (O), while ‘food quality’ (e.g., bakery products, chicken quality) varied as must-be qualities (M) or one-dimensional qualities (O) depending on the category. ‘value for money’ was classified as attractive (A), indifferent (I), or must-be (M) qualities, depending on the business type. Finally, 'waiting time' was identified as a must-be (M) or indifferent (I) quality. These findings suggest that selection attributes differ by business type, highlighting the importance of tailoring improvements to essential attributes and reducing emphasis on non-essential ones. This study aims to provide foundational insights for service improvement and strategy development in the overseas expansion of restaurant franchises based in Korea.