^I rewatched the Inspire PV now too. Funny how they're on screen pretty long and seem obvious now that you pointed it out but I don't remember ever seeing that before.
;; While watching that PV I also realized that it has spider web and butterfly flashes from time to time. The last butterfly flash is some strange goo though.
And once earlier and once and after that 'strange dudes flash' that same room flashes, but the chairs are empty. Oh and also, the Inspire-banner that Ayu looks at the beginning of the PV has nothing but desert/rocks, but when she looks at it in the end of the PV there's something goo-like again, or more like a weird puddle. Now I don't have this PV in HQ so I'm not sure, but because the last scene we see before the 'illusion' ends Ayu sits on the desert alone facing the horizon so I'm thinking she's melted or something... She kinda "dies" in a lot of her PVs so I wouldn't be surprised.
(and probably everyone has already noticed this stuff and I'm just slow.
)