Because we can’t have nice things in the year of our lord 2016, Utada Hikaru‘s father (Utada Teruzane) recently clarified that Hikki’s supposed participation in the ‘Kingdom Hearts III‘ theme song is not yet official.
https://twitter.com/u3music/status/812371484563750913
Of course, that contradicts what he said about them having already started working on it, but I mean he kinda did the same thing three years ago, so I guess it shouldn’t be that surprising.
https://twitter.com/u3music/status/391160089890930688
Regardless, I have to think Hikki will be involved somehow since she wants it, because at this point how could they refuse her?