BanG Dream! Episode of Roselia Collection

"Are you prepared to fully devote yourselves to Roselia?" To reach the stage of "FES.", Yukina Minato decides to form a band. Each holding their own convictions, the members of the band come together. The five girls now begin their journey to the top as Roselia. This is the story of their "promise" made to each other, from the start of the band to their challenge towards FUTURE WORLD FES.

''It takes the five of us to be "us."'' After overcoming numerous tribulations, the members of Roselia promised to appear on FUTURE WORLD FES. It is now Autumn - Through writing the lyrics of "Promise," Lisa has matured. Watching the change of color in the autumn leaves, Yukina and Sayo express their resolve in a picture letter to their future selves. Driven by the wish to do something for Roselia, Rinko has started to compose a new song. "The remaining quests are the contest, the tournament, and FUTURE WORLD FES..." Reflecting on their goals, Ako starts to feel anxious. What view will the five of them see beyond FUTURE WORLD FES?