The whole fucking ending is already leaked. Same overdramatic pseudo-philosophical dialogue trying to hard, same stupid convoluted plot and some corny and over the top voice acting but the OST is god-like as always. Enjoy
https://youtube.com/watch?v=jJjXPcxmvq4
https://youtube.com/watch?v=3DqknBLJefo
https://youtube.com/watch?v=h8pH2h9anU8
https://youtube.com/watch?v=0__lnKfNiMc
TDLW: Sora defeats Xenahort and talk no justus him. Original Ansem and Original Xenahort (I don't fucking know at this point) were good friends or something and make up before dying or someshit about light. Roxas (or I think it was Ventus? I can't follow this shit!!) , Aqua and Terra, Axel and I think even fucking Xion live. And Sora went to find Kairi to make more games. That's it. He dissapeared Thanos-style at the end but it's probably just a red-hearing: nobody fucking dies on these games.
I think some people are already dissapointed by it. It was worth 13 years for such a resolution for such a stupid and convoluted story, Nomura? I hope you learned your lesson for future and learn how to make a basic narrative structure. Aim for the stars, boy