https://idolmaster-official.jp/news/01_16650

Kassy will be using the tips from Riku to try for a high score in a collaboration between the Imas Channel and Imas Tours channel.

Appearing with be Kassy and Riku. The videos are already available:

https://youtu.be/bSeEq83dQDI
https://youtu.be/-mdqqFYaAA4