User blog comment:Hielmiez/The New Queen Idol Reveal! Hype for S2!/@comment-29268934-20170126025813/@comment-3487190-20170126033422

I think that concern is not very necessary, as they're game characters so they might just stay in both game and anime. But inevitably, they would have a more minor role in the following story. That might be something we would had known ever since the beginnig of the story.

Well having Koharu's case, I'm not too sure to be honest. But they could stay as professional idols like WM.