There's also a broadcast of the idolmaster stage on the main stage.

http://live2.nicovideo.jp/watch/lv305524399

2017.09.23 14:00-15:00
IM@S Game Show 2017
 guest :: Nakamura Eriko
 guest :: Imai Asami
 guest :: Shimoda Asami
 guest :: Abe Rika
 guest :: Hirayama Emi
 guest :: Ogasawara Saki

--
Hitoshi Doi
                          " this space for rent "
http://www.usagi.org/doi/                                    doi@usagi.org