i think it's one of the strongest Ayu songs post RnRC, imo! it's so nice & quite refreshing. i thought her voice was a bit weird at first, but i don't know if it's because of the quality of the leak, or whatever. but repeat plays have been real helpful with that.
the credits for the song haven't been released yet, right? i'm thinking this is a TK (Tetsuya Komuro) song. it just ~sounds~ like one, imo. LOL.