In the opening episode of Shusaku, the handyman arrives at the girls' dormitory of Shukusei Music Academy, where promising young musicians reside. While maintaining the facility, he observes the pristine facades maintained by the residents and begins to gather evidence of their private indiscretions. With this leverage, Shusaku initiates his first manipulations, compelling the talented women into compromising situations away from public view. This installment introduces the power dynamics and hidden undercurrents that define life at the elite institution.