One the most remarkable things in the previous series of "Kingdom Hearts" is the theme music. The person behind that transcendental music is Utada Hikaru. Her voice just makes every song for the game amazing and memorable. Her two blockbuster songs for the game series entitled "Simple and Clean" and "Sanctuary" makes every player well up or reflect on life.

Involvement of Utada Hikaru will be there soon

We'll do it. Actually we have already started. Sorry for keeping you waiting. teruzane @ritch_diaz @utadahikaru Still Waiting for a confirma

— u3music (@u3music) December 22, 2016

one correction. regarding hikaru's involvement in Kingdom Hearts III, we are eager to do it. however, our decision is not official yet. teru — u3music (@u3music) December 23, 2016

The twitter post from Utada Teruzane, the father of Utada Hikaru, assured that his daughter's involvement for the upcoming "Kingdom Hearts III" is not yet official. Of course, some fans are eager to hear Utada Hikaru's new piece, if the involvement is approved and sure. One comment from fans from Gematsu's related post says that the game is not the same without her music in it.

In short, Hikaru's music is already well-known by fans because of its nostalgic nature and transcendental voice. One example of the most nostalgic that is featured in the previous game, "Kingdom Hearts 358/2 Days" was the song entitled "Sanctuary." However, the version is strings and piano, which makes it more emotional and touching. A sample of it can be heard in YouTube.

Not official leads but announcements should be expected for assurance

Some fans maybe saying that Utada Hikaru will be making the song for "Kingdom Hearts III" but it is not yet sure. Basing on the Twitter post from her father and manager, it is not official, which means that plans are still thought of until now. Since the release date of the said game is still far yet coming closer, numerous announcements including a demo will be expected.

Lastly, there is something in Hikaru's voice that make Kingdom Hearts series whole as a memorable game. Kingdom Hearts is still on the making for the PlayStation 4 and Xbox One console. For now, players and fans should wait.