Roxas woke up after being nabbed by Xemnas' grasp. He was taken into the room of nothingness, same area where Riku and Sora fought Xemnas. Roxas gets up from the ground as he's been holding onto his Oathkeeper and Oblivion Keyblades. And then, he looks at Xemnas. Xemnas shouted, "Roxas, I'm happy to finally have you here, by my side. I cannot allow you to be in the realm of light. If you and I are eternal, like light and darkness, then surely you and I must be the same…Eternal!"
Roxas then looks down after what Xemnas said, then he replied, "You're right. You and I maybe eternal. But we aren't the same. I could be eternal, yet you aren't!" Xemnas chuckled a little as he replied, "Is that what you believe? Maybe Xion could be eternal as well. You two are something more than just nobodies or puppets. But part of the enemy to Kingdom Hearts."
Xemnas then summons some kind of power to ached Roxas's heart, Roxas falls to the ground in pain. Ass Xemnas continues, "See? I can control your heart. We are the same, we're nobodies. You must never resist the nothingness!"
Then all the sudden several voices in Roxas' head starts to speak as he felt cheered by characters that ever supported him.
Sora: "Roxas, you deserve as much as I do to be your own person."
Naminé: "Roxas, you won't disappear. You'll be whole!"
Hayner: "You'd seem like a pretty cool dude, Roxas."
Pence: "Thanks a ton, Roxas."
Olette: "We always have proof that you are our friend, Roxas."
Ventus: "Roxas, was it? You're pretty good!"
Patch: "I have to say, you really are a one of a kind."
Roger Rabbit: "You'll always be my best friend and getting to beat up the dark monsters is fun!"
Chicken Little: "You put that tough creep in his place, and I'd knew you are stronger than that!"
Obi-Wan: "The force will be with you, Roxas."
Anakin Skywalker: "Your skills are most impressive, never hold back!"
Lea/Axel: "Right back at ya, buddy."
Xion: "Roxas, I'd always love you…no matter what. And we'll always be by your side."
Roxas then starts to stand up and raise his Keyblades and targeted towards Xemnas. And he shouted, "No! You'd maybe my boss. But you'll never take control of my heart! And with the power of friendship, I'd have every power I need. MY FRIENDS ARE MY POWER! AND I'M THEIRS!" Xemnas then summons his eternal blades to prepare for this final battle as well, he then replied, "Then I'll erase you…FROM EXISTENCE!" As the
Xemnas then asked, "Why, do you resist the emptiness?" before the battle began. He grabbed Roxas and threw him in the air, only to strike him with the nothing voids. Roxas was quick enough to dodge all of those attacks.
As Roxas landed on the ground, he and Xemnas then strike each other with their own blades. Roxas with Oathkeeper and Oblivion Keyblade, and Xemnas with Red Eternal Blades. They both had a dueling battle for a couple of minutes until Xemnas teleported behind Roxas as he shouted, "STRIKE!" Roxas was able to avoid that blast of Xemnas thorns.
Then he runs to Xemnas ready to do some more damage. Xemnas then shouted, "Be gone!" As he unleashed his eternal blades to attack Roxas. Roxas was able to block that move, but barely.
As the fight still goes on for 20 minutes, Xemnas teleported high in the air as he shouted, "You, insolence! I'll banish you to the void." He then turned the room in black, and summons a whole bunch of red laser beams surrounding Roxas, ready to open fire. Xemnas then shouted, "No escape!" He fired every last beam to Roxas. Roxas was able to use all of his command moves and his Keyblades, plus the guard shield to block all of the beams for at least two minutes.
After all of that, Roxas and Xemnas then continued fighting for the next 10 minutes with their blades. After all of that, Roxas was able to strike Xemnas as he zooms in towards Xemnas to finish him off.
The fight ends with Roxas landing on ground safely, while Xemnas floats down as he's dying in the process. He looks to Roxas as he said, "This…can't be…" He looks to his hands as he said softly, "I've been bested…yet again. But now, by one of my own…" Roxas then walks to Xemnas as he replied, "Xemnas…We all have hearts. And I know you have one as well." Xemnas looks up to Roxas as he continued, "I felt the pain, sadness, love and happiness back then. And I still do. Tell me how you feel? Was it really worth it?"
Xemnas then replied, "I feel…like the emptiness inside of me, starts to wear off. As seeing how my opponents stroke me down, it makes me feel the hurt that lives in me. Just like you, Roxas. I completely understand your emotions, and how much you love Xion. I saw how you'd cry in pain and fury when you lost her. The pain that you've gone through…I can feel it too. Having a Heart is just pain." Roxas then looked down as he knows what Xemnas was talking about. He looked up as he replied, "Yeah…and having so much pain, sadness, laughter, is like being a true human being."
Xemnas then looked to Roxas and smiled back, "Yes…indeed." Roxas smiled back after taking the words from Xemnas. Xemnas then said, "There is…one last thing I wanted to tell you. When you are ready…"
"Huh?" as Roxas questioned Xemnas' words as he replied, "The Organization needed a much better and heroic leader. I always found you to be my successor. But unlike me, or Xehanort…you'd be the one to make peace, for all eternity." Roxas then looks down as he felt confused yet understands what he meant. Roxas then looks to Xemnas and replied, "Sorry, but I think I'll pass." As Roxas doesn't want to take Xemnas' words.
Xemnas then looks up as he's disappearing from existence, then a bright light shines, as Roxas is being teleported away from the Room of Nothingness.
TO BE CONTINUED…
