This is a weekly TV show by Bushiroad.
Starting with the July 6, 2017 broadcast, it focused on the smartphone game
Bang Dream Girls Band Party,
and featured Aimi, Ozaki Yuka, Kudou Haruka, and Ohtsuka Sae.
The previous show was
Gekkan Bushiroad TV with Bang Dream,
so this is sort of a continuation, with slightly different seiyuu.
The main corner has Aimi and Yuka as waitresses at a cafe,
and they have some Bang Dream related guests every week.
There is also a short "gossip" corner with Sae and Haruka.
This show is broadcast on Tokyo MX, but it's also archived on youtube
for two weeks.