The official YouTube channel for Bushiroad’s multimedia project BanG Dream! has posted a 30-second main trailer for the upcoming anime film BanG Dream! Episode of Roselia I: Yakusoku (Promise) featuring its OP theme song “Proud of oneself” performed by Roselia.
Then its second part BanG Dream! Episode of Roselia II: Song i am. will follow on June 25, 2021.
“BanG Dream! Episode of Roselia – I: Yakusoku / II: Song i am.”