[@Prince of Seraphs] Grane is in the same boat as the rest of team STRG/RGTS in that they can't really do anything yet until the time skip happens. At the very least, I've kept in touch with them and they're just waiting for the opportunity, otherwise I would have had Gren bring Grane and Robert on this adventure too.

As for Skyra's affiliation, I believe she mentioned it in a monologue, but hasn't told anyone about it. It's where she got her scars and why her sis gets katnapped in her subplot.