BanG Dream!

Bringing Poppin'Party and RAS together at Galaxy, Marina announces that both bands will proceed to the finals at the Budokan, to everyone's relief and excitement. Each band then prepares to perform in the Budokan which includes a dress rehearsal at CiRCLE. Along the way, Poppin'Party prepares a new song that they want to play with Roselia and RAS, both of whom accept. Meanwhile, Asuka volunteers to help in the Girls Band Challenge, including creating a poster for the finals and interviewing the bands for her blog. The night before the finals, Kasumi sees Asuka proofreading her blog post. Asked to explain how she finds sparkling, heart-pounding moments in her life, Kasumi recounts how she found these moments by forming Poppin'Party and meeting and making new friends over the past year.

After Masking leaves the impromptu RAS meeting, Rokka looks for her but to no avail. The next day, after receiving advice from Kasumi, Rokka searches for Masking again, finally finding her in her school. Meeting in front of the Budokan, Rokka praises Masking for helping her and tells her to meet with CHU2 to make up which Masking initially becomes hesitant before agreeing. Meanwhile, Rei meets Tae where she talks to her whether she still cares about RAS; Tae tells her that as the vocalist of RAS, she has the power to change what RAS will do in the future. RAS (sans PAREO) reunite as a band to perform, but feel anxious and distracted due to PAREO's absence and do not perform well. While Rokka and Masking head to Chiba to find PAREO, Rei talks to CHU2 about needing to work together in the best interests of the band. After finding out that CHU2 wrote off PAREO for being useless, Rei and CHU2 also head out together to find her.

All the old shopkeepers from the Jizo-dori shopping district break their backs just before their trip to the hot springs, so everyone (except PAREO and CHU2) go in their place. After settling into their rooms, the characters from different bands interact and socialize with each other. In particular, Rei and Kasumi meet, where they praise each other's performances as RAS and Poppin'Party respectively. Some of the characters also rest in the hot springs with some staying on for too long, resulting in them overheating. In the end, Afterglow inform Kasumi and the others that Poppin'Party's music video gained over 10,000 views which they celebrate before tending to the overheated characters.

RAS and Roselia prepare for the band battle that is held at Dub Live House. Despite Roselia preparing for the "Over the Future" concert, a precursor event to FUTURE WORLD FES, Yukina still wants to perform with RAS as soon as possible. Sayo leaves, believing that Roselia are overloading themselves practicing for two events at once. However, after talking to CHU2 and finding out why she wanted to set up RAS, Sayo comes back, intent on beating them. On the night of the band battle, RAS and Roselia perform. Announcing the verdict after the performances, RAS wins the band battle with CHU2 exclaiming that RAS is better than Roselia.

With Rokka joining as the (temporary) guitarist of RAISE A SUILEN, the band heads to a film studio to shoot a music video (MV) of their new song. Afterwards, they return to the studio to play their new song, but Rokka struggles to play together with the other band members. After a chat with Masking in a ramen shop, Rokka keeps playing until the song is perfect. The next day, the band is impressed by the PV they put together. During lunchtime, CHU2 inducts Rokka as a permanent member of RAS with the moniker LOCK.

After not performing in RAS' encore, Rokka is chased by CHU2 and PAREO in school and around town the next day, wanting to scout her for RAS. In the meantime, CHU2 meets with Yukina, reiterating her challenge to Roselia. Seeing similarities in the bands' philosophies, Yukina decides to have Roselia enter in the BanG Dream! Girls Band Challenge competition. Later in the night, after seeing Rokka practice her guitar in the Galaxy live house, Masking takes Rokka to CHU2's studio, where she performs alongside RAS. Unimpressed with Rokka's lackluster performance, CHU2 decides not to include her in RAS, explaining she cannot accept those withholding their skills to satisfy her.