Despite this games quality being quite low, it still manages to be quite fun as the gameplay itself is pretty engaging. (I like rhythm games so uhhh)
That is until you run out of content. The lack of a true story is fine considering what this is, but the requirements for getting the final few ranks to finish the game is just too high. You end up having to grinding out songs in order to hit the credits, and with how few of them are actually good, the game gets super stale.
I guess I recommend this if you're curious, want to see the some P5 team moments, and see the songs/dances (however bad some of them may be (seriously, there's some horrendous stuff here)), but there's no point hitting the credits, it's just not worth it.