User blog comment:Jaadowgg/Movie Info and New Ending/@comment-10145707-20130924145003

Link You will get all the information there.

I can't wait to hear it! >.<  I loved Reason and Nagareboshi Kirari so I'm sure that I'll love it too. Yuzu's songs are great and I think that they really suit HxH. They are wonderful singers too.

They said that the movie's "light and dark" theme matched the song's lyrics so maybe it'll be about Gon and Killua? (Gon = Light, Killua = Darkness)