Backstage at the Yukihime High School Mini Music Festival, the atmosphere was thick with anticipation. The Harmony Union Acapella Group had just finished their powerful performance, leaving the crowd buzzing with excitement. The second music club had just started their performance, and the crowd sang along as they performed a famous song. The venue was boiling with excitement and musical feelings. But behind the curtain, in the dimly lit backstage area, the mood was different—more intense, more personal.