>>70866613The reason was to deny Selen her 3D. If she was still in Niji, Rosemi and Petra wouldn't be getting their 3D debuts yet.
I'm guessing the other waves will get their 3Ds in debut order (e.g. Ethyria is next, then Luxiem etc.), and they were probably told that they couldn't get their 3D until Selen is gone so that they would want her gone.