I came to this anime expecting Vocaloid but they're barely in it??? Instead it's just the other Project Sekai characters and it's mostly boring and uninteresting.
Zero understandable plot here. Looks like I would have had to play the game to understand what they're doing or how anything works. Pretty sure anime adaptations should be accessible to everyone, but okay.
It's not like what's happening is even that interesting, it's just a music group doing things vaguely related to music but not music itself, preparing for it as if they're actually going to play something. You'd think it would be carried by the characters but I wouldn't wish I was watching K-On instead if that was the case.
The characters have all of 1 personality trait each and engage only in mind-numbing moe antics, and on top of that, it's not even funny.
The theme is nice I guess, but the show is not that pretty. Flash does not look very good on anime characters and movement is very minimal. This is too short not to finish, but very obvious this was just made to cash in on Project Sekai, there's not much use to start watching it in the first place.