Seo-Jun Han

Once a temperamental and withdrawn K-pop trainee, this talented musician possesses incredible piano skills and a voice that attracts constant attention from idol scouts. His life changes when his sister forms a bond with Ju-Gyeong, eventually pulling him into a close-knit friendship with both her and Suho. Despite his initially prickly and reserved demeanor, his musical prowess and evolving relationships define his journey through the spotlight.