He slowly ascended the winding passage up to the Proof of Existence. He'd had his revenge on the Keyblade Bearer, but still... what was he feeling? He had no way of knowing. Not without a heart.
By sheer luck, Luxord was surprised by one of his gamblers appearing. Floating near to it, was a ruined black leather briefcase, with a thick chain tied around it to prevent it from opening, as well as one of the cursed medallions.
I found this, my liege.
He took the case from the Gambler, and dismissed the nobody immediately. The curse could not work if one of the medals was taken from the world. He looked at the case closely. It might have once been of expensive leather, but it had been battered and rushed about by seawater, presumably, considering where it was found, and that it was drenched. As he held it, he felt inexplicable warmth. His feelings for Demyx, he could understand them. But there was also someone else floating around alongside the mulleted musician It was the heart that Mr Slater had given to Demyx, who'd hidden it away for him.
He summoned a portal, to take him to the Proof of Existence. Demyx had visited his room with the heart... maybe the door would remember?
He held the case to the door, but there wasn't much door left. It had been shattered, as they always were, when Demyx had been killed. The case was held to the largest remaining part of the door. It glowed golden, and the portal slowly opened...
He crouched down, and crawled through the tiny part of the stone portal still intact. He found myself inside a circular room with a blue decoration. There was a small pond-like feature in the centre, with a waterbed floating on it. He took a look around. Just in case Demyx had returned, he told himself. Part of him knew that Demyx never could. Tired, and emotionally drained after many years without, I lay upon the bed, and my eyes slowly closed.
He woke up, but I didn't know how long he'd been asleep. He pulled myself up, and stood up sharply, carefully hopping up to the dry surface of the floor.
Just outside the wardrobe, he noticed, was a cardboard box. Out of curiosity, he opened it, and found an array of pieces of jewellery, accessories, and multiple pairs of shoes. He didn't know why, but he pulled off his own pair of boots, and pulled a pair of brogues identical to those that Demyx had requested to wear out, and quickly laced them up: they were a little large, and as he stood up again, his feet slipped around in them. It was a sort of... feeble tribute to him, because he could do nothing else.
Suddenly, he had an overwhelming desire to break open the case. To get his heart. That's what Demyx had wanted. He drew a die from nothingness. It floated at the tips of his fingers, spinning rapidly, and he raised it up high, suspended in air, and brought it sharply down upon the chain. There was a chink in one of the links, and he repeated it until he was able to pull away the chain.
He opened the briefcase, and was exposed to a bright golden light, that flooded around his body winding round and sifting through his clothes and skin. The warmth intensified. He understood what he was feeling...
He was no longer with the Organization. But maybe... when he called it, a Gambler still came. On his orders, it shifted its appearance to duplicate that of Luxord, facial expression and clothing, too.
"Stay in my room. It will remain open. Stay there unless ordered to do something by Saix or Xemnas. If you fight, lose." Without waiting for a response, he summoned a portal to a place he'd not been for over a year.
