Xemnas approaches, standing before the kid. He's looking at the kid with a bit of a frown. He doesn't look very impressed with him. He doesn't respond, he doesn't even really look up. He doesn't know who Xemnas is, he doesn't know where he is, he doesn't really know much at all.

“You feel nothing. You can feel nothing. You are nothing. I can give you a purpose. A reason to exist.” Xemnas reaches out and grasps him under the chin, tilting his head backwards so he’s looking into his eyes. “You’re not much to look at.” His brow is furrowed. He lets go of the kid and puts his hand out.

It's unclear the order of the letters, for floating between them is a representation. ‘Y’ ‘M’ ‘E’ and ‘D’. Whatever he is looking at seems satisfactory, and he continues. There is no chanting, but a sense that there is magic involved wouldn’t be out of place. The letters spin around the boy until they can’t be distinguished from a blur of light and at last a thrust of the man’s hand and the letters arranged themselves. DEMYX. The ‘X’ is stylized and is actually the letter χ. The sigil itself would be pushed into the unresponsive young teen’s chest and absorbed as the spell takes hold.