Am I the only one that finds it interesting that the next update concerning KHUx focuses on Elrena and Brain/Blaine? The update coming in January 31st? The date that the Secret Ending also releases?
First, your heart doesn't need to be destroyed to go to the Final World because the whole point is that's the place where hearts go when they are not ready to pass on. It might have been misinterpreted with the heart and body "dying" (after all, it's structured in Japanese).
Sora was shocked and exclaimed "NaminÃ¨?!", understandably so. The shock was about NaminÃ¨, not Nameless Star.
And second, you wouldn't find this on Youtube because it's a STREAM. A stream is watching someone play the game in real time. Things like Twitch cater to that. It was Bizkit's(?) stream I believe. This information comes from the people that have watched it. Both from ResetEra and Twitter.
The name Strelitzia is not said, but it is heavily implied it's her. She's the only other dead character that has a semblance of relevance to be granted a cutscene and we know she's offed in KHUx.
One star is NaminÃ¨.
The other star is Nameless, but once more...
On the other hand, it looks like Gula and Ava are leaning to be the other most blatant couple next to Sora/Kairi and Sora/Riku (don't @ me). I was like, whoa, in Back Cover. And now with the Epilogue he's the only one who cares enough to ask for details on her.