BanG Dream! is ... A story about high school girls forming a girls band. In February 2014, the voice actress live performance performed by voice actor Aimi had a good reputation, and Bang Dream started in 2015 as a project where the real band and 2d-contents are linked. There are four real bands as of 2019. Animated every year from 2017. The smartphone rhythm game that started in 2017 is full of cover songs, becoming the No. 1 popular game in smartphone sound games. Released in 2015.