Uselessful said:
Regarding instrument request
It's a G&L Tribute ASAT Classic in Butterscotch Blonde. Effectively a Fender Telecaster. I don't think it being Nina's guitar warrants it a tag of its own, it's exactly the same in body shape, same pickup and control layout and almost identical in headstock shape, probably even designed by the same old Leo Fender.
Fair enough about it maybe not needing a tag, our instrument tagging is pretty messy as-is. However, I'm not too sure about tagging it as a Telecaster if, well, it's not one.
Fun fact, one of the stores in Kawasaki that had a collab sells it for the same 79200 JPY as the one Nina saw in the anime: https://store.shimamura.co.jp/ec/pro/disp/1/mt0145887