The relationship between an Idol and a fan would never go further than that? Tzuyu has debuted as a solo artist for 3 years now and in the 3 years, she always saw the same girl, at her fan meets, fan signs, concerts, music shows. The girl is always there. Sana has always kept up with the Korean music industry. Born and raised in Japan, she decided she would leave Japan for Korea to meet her idols. From the very start, Tzuyu had captured her hearts. She had always been there. How would this love story flow....?