"There's a door to escape?"
Xion ran after Vanitas as he led her through memories of Sora's. They were passing dark times: when he desperately pleaded to see Kairi, when he found out Riku had betrayed him, when he found out the only way to save Kairi might cost him his life, when they were separated, when he felt he might be useless to save her.
"Yes," Vanitas replied simply, "Deep within Sora's mind. Where we are heading. It is where Aros tends to linger, you see. Sedimental fool. With your Keyblade, it can be opened."
"And we can all go free?" Again Roxas flashed in her memories. Before Vanitas could speak a new voice entered.
"Why did you bring this fool of a child, Vanitas?" All Xion could see in the black was two yellow eyes, "She only thinks of the one she loves."
"I can't-" Xion began to protest as Aros stepped out, Anti-Sora in the flesh. Sort of.
"Nobodies can't feel emotion. Remember you aren't one. As such, remember Roxas can never have the feelings for you that you have for him." Aros hissed. Xion flinched away, but all of what he said made sense. Her attention was pulled back as Aros yelled. When Xion looked up Vanitas was holding a hand in the air and Aros was rubbing his head.
"She is The Lady of Oblivion."
"You said that of Namine as well. What makes her different?" Aros snapped. Vanitas shook his head and began to speak.
"She was created from fragments of memory and forgotten the second she no longer existed, even by her Beloved Roxas." Vanitas clarified. As they spoke, Xion fell back a bit. A hand was over her chest as she breathed deep.
She wasn't a Nobody. Did that mean...she had emotion? Then what was she? Xion closed her eyes, trying to focus on herself as they spoke.
"...You've explained everything to her?"
"What do you take me for?"
"Fine. Don't trust me. But don't tell me you don't want to see her again."
But she barely heard any of this. She did hear something else. It was slow, but it was there. Ka-Thump.
"I have a heart."
"And that sound earlier was it shattering, I bet." Aros snapped. "Seeing the boy you love and realize your feelings are one sided. Being an oddity is not always a good thing girl!" He yelled out again as Xion's face fell. Vanitas approached her carefully, offering a handkerchief, though she had no idea where we got it.
"There six people trapped in this boy's mind." Vanitas exhaled. "Myself. You. Aros here. That blonde girl. Roxas. And..." He paused, choosing a word. "An old ally of mine. Ventus. You can set them all free."
"You make it sound like the solution to everything." If Aros's point had been to crush Xion's hope, he had succeeded.
"It is, in fact."
"Roxas is still-"
"There is no promise that they'd come out differently." Vanitas stated. "However you should note at this point he has been exposed to his Somebody. It is entirely possible it will have given him that ability to feel."
"It should also be noted that emotions are in the brain, not the heart." Aros sighed. "The Heart is more like your soul. What makes you who you are. Nobodies have brains, they have emotions though they tend to deny it. A rumor started by the original Six members of the Organization so the rest would follow their will."
"Well that worked splendidly. Half the organization had a scheme to take over or turn on it's leaders." Xion snorted. Vanitas laughed, clapping a hand on her back, and looking to Aros again. Or at least, she thought so-his helmter turned in his general direction. "So Aros. What do you say you lead us to the door so Xion here can let us out?"
"...Xion." Aros looked at him. "Did Vanitas tell you everything? How it works?"
"I use my Keyblade," She stated, "Because neither of you can summon one."
"...Really?" Aros seemed to glare at Vanitas who held up his hands.
"Come now Shadow! It was easier then trying to explain all the logistics. Besides-don't you want to see your lovely girl again?"
Aros seemed to hesitate, glanced to Xion again, and for a moment she thought she saw sadness on his face.
"Some day, Vanitas," Aros stated quietly, "You'll understand the pain you cause."
"Yes yes." Vanitas shook his head. "But will you lead us?"
"...Xion." Aros faced him. "This...Roxas. Would you die for him?"
"I kind of did that already." She pointed out. The heartless showed the flicker of a smile.
"Would you kill for him?" This question caught Xion off guard. But she didn't need to think about it long.
"...Yes..."
"Very well. Then follow me."