Ruffian here.
I have a schizo theory, so please disregard this if that kind of thing makes you mad.
Some other people have already suggested it, but I think Shiori is graduating. Yeah, the homocollabs are part of why I think so, but the real reason is because of FUWAMOCO.
Every time someone is going to graduate, FUWAMOCO drop everything they're doing and try to schedule a collab with them. They did it for Aqua, Ame, Chloe, Fauna, Shion, and even Mumei. A couple weeks ago, they really wanted to play Overwatch 2 with Mumei and it was strange because they had never played it before or ever showed any interest in it whatsoever. But they really, really wanted to play Mumei's favorite game with her and now we know why.
FUWAMOCO have been gone for almost two weeks and the reason they gave is that they needed to go home to the NWP for something. They wouldn't tell us what it was. Everyone assumed it was to see their family, and I'm sure they're doing that, but I also think maybe the real reason is that they're going to visit Shiori on the West Coast, maybe to record something together because Shiori couldn't make it to Japan for 6th fes. They seemed really sad about having to go home and talked about it in a way that made it seem like this trip was something they just had to do, but not necessarily something they wanted to do. The timing was also very bad because Fuwawa was sick and they had to cancel a bunch of streams before they left.
They're very sentimental and they love Shiori a lot, even if they seem sort of distant. I think if Shiori told them she was graduating, they would want to record something with her no matter what.
