Say less, I'm in.
oh I am absolutely digging this so far! only slightly collapsing into dust at the implication that love live is so old now that the main character was in elementary school when she started playing it...
I think they were referencing Aikatsu or Pripara.
It's definitely a pretty rhythm or aikatsu reference, Love Live doesn't have outfit coordination as a main mechanic like those two do where you mix and match different parts of outfits together.
i was trying to figure out which, but it kinda has elements from each. hair/eyes feel more pripara, outfits very pretty rhythm (or very early aikatsu). entirely possible the artist just went with a vague amalgamation of all of them though.
aaaanyway! art style is cute and the setup intrigues me. i'm probably gonna keep an eye on this one