The fact that we have another connection to the Battle Network era aside from that small easter egg in one of the Starforce games and the Operation Shooting Star crossover.... I WANT THIS TO HAPPEN!!!
My first thought was this was a Kobayashi Dragon Maid reference, but that can't be since this art dates about 15 years ago and Kobayashi Dragon Maid debuted in 2013, roughly 11 years ago)
However I am not fully up to score in all the lore: why are conscious mushrooms sympathetic to Marisa, when she collects them for purposes which they presumably would find nefarious ?
Not being accepted into art school is not necessarily proof of anything; any more than not being accepted by the Fine Art crowd of auctioneers and top buyers means you're crap.
Based on my going second Kashtira Diabel Adventure deck, where Dracossack + Cherubini being the funny bridge between them, in addition with Diabel's chainblock loop with Dracoback (not shown here).
If you are talking about this being AI, I don't think it is.
no, but it has already been flagged several times that this artist actually traces over an image made by AI, that's reason that his images it looks so... rough.