This was a surprise, and the day after Lunatic Live, too. (Lunatic Live was the 27th and 28th, a big concert with all 20 characters/4 groups of the live-action/stage cast before Alive, and they were amazing <3)
They also announced the stage cast for Growth, it's on the twitter for Alivestage.
Since they're not having Soara appear in the Growth episodes of Alivestage at all, I feel like this cast probably will play these characters if they ever have stage appearances, which will probably be in a live and not a play - so, the next time they do something like Lunatic Live.
That will be fun if they do Blue and Red like they did this time...
waaaaah the background section for Tsukipro is so long -- ahh this franchise is so complicated, but it's so wonderful. Like.
It consumes your life.
But in the best way.