>>714240637
The idol stuff is basically just Uma's version of the Winner's Circle from real horse racing, but obviously with idolshit. Really just nothing more than their take on celebrating the victor horse. The MVs are fun though.
https://www.youtube.com/watch?v=pI_VUNYXysI
https://www.youtube.com/watch?v=QNaTyxou5gs
https://www.youtube.com/watch?v=HFgc3MgRIzg
https://www.youtube.com/watch?v=obbMgAa-eIw
That being said there will eventually be a scenario that actually focuses on the idol stuff called Grand Live.