BanG Dream! Movie: Episode of Roselia - II: Song I Am.

The Roselia members decide to perform at FUTURE WORLD FES after overcoming various challenges. In the autumn, Lisa reflects on her growth through writing the lyrics of "Promise", while Yukina and Sayo share their resolve in a heartfelt letter to their future selves. Rinko is inspired to compose a new song in hopes of contributing to Roselia's success, but their goals bring anxiety to Ako as she considers the contests and tournaments ahead.