[truehappiness]

I doubt she wasn't invited... why would lesser acts get an invitation and Ayu not? It just doesn't add up imo.

She probably had to reject due to other commitments on the same day or something and it's not big enough of a deal for her to announce it on her blog, or if she does, she might do it on the day of the event.

MSSL was explained since she was on the guest list and at the last minute, had to be taken off. Since she was never officially on the guest list for FNS to begin with, it's not that big of a deal... perhaps they were holding out on her to accept, and she never did? [Last year, I think she was part of the last set of performers to be confirmed for the show.]