In completely unexpected news, SideM is currently having a collaboration with Granblue Fantasy. While iDOLM@STER Cinderella Girls has collaborated with Granblue Fantasy previously, SideM’s only connection to Granblue is being hosted on Mobage, while Cinderella Girls is developed by the same devs as Granblue. It’s a surprising but welcome collab!
The collaboration period runs from October 7 to October 19. Simultaneous events are running in both games relating to one another. More info on both events until the cut!