Kazuya promised exclusivity to both Kiriha and Kyoka tho.
Tbh Kyoka and Kiriha characters overlap too much, Kiriha should have kept dead.
But i get that combat is better with Kiriha.
My point is that Kyoka is a Kiriha replacement and both being aroubd is redundant, specially with how much Kyoka is sidelined going forward.