I thought it was a good performance overall. Even though Ayu messed up on the lyrics, I kind of like the little gap before the first chorus.
And I absolutely love that dress!!! That is by far my favorite dress that she's worn during a perfromance of Mirrorcle World.
My only problem is the part where they tore the dress off. It looked really wierd without the big explosion like at a-nation and at the performance where she wore the gold dress.
p.s. I personally didn't find her vocals to be that bad at all! (but that's just me
)