Disclaimer: Anei Aikouko does not own anything Yugioh except a manga she can't read.
Yami wept as he stumbled up the stairs of the tallest building in Domino. Yugi didn't need him anymore and had told him so. He had loved being the older, sort of parent-like figure and protector but Yugi didn't want that anymore and that's all he knew how to be.
He didn't know what else he could become or how to step out of the familiar roles as Game King, Yugi's protector, and Yugi's mentor. And now, now Yugi didn't need that any more. Yugi wasn't a child now. He had grown up, grown out of Yami. Coming out onto the roof Yami pulled out his deck. Grabbing the Curse of Dragon he summoned the monster and mounted it, telling it to go to Egypt. He didn't care where in Egypt either; he just wanted to be somewhere familiar again.
When Yugi had told him that he wasn't needed anymore and he should just leave he fell apart. Now he was completely at sea and he needed to become something again. The only place where he knew he had been something before was Egypt so he was going to Egypt.
His memories were scattered and his mind was in turmoil. The only thought that penetrated his numb brain was that Yugi didn't want him so he had to get to Egypt. He didn't even remember why anymore and it didn't seem important. Nothing seemed important. Nothing mattered anymore.
He raised his face to the sky and let the numbness sweep over him. Pure blessed darkness surrounded him and he felt at home in it though he didn't know why. 'Why is darkness so comforting?' He thought childishly. 'Who is Yugi and why doesn't he want me? What's an Egypt?'
The Curse of Dragon turned its head to gaze at him steadily and Yami giggled clapping his hands. 'It's a cool monster! Everything is wonderful!! Look at those shiny white things in the sky. What are they I wonder? And what's holding them up.'
They dipped low over the ocean so Yami could see the water and feel the droplets kicked up by the wind spattering on his skin. 'Oooh, it's so pretty! And wet, lovely-lovely wet stuff. What is wet stuff called?' Yami dragged his fingers over the wet patches in his clothing and licked at his fingers. 'Mmm, it tastes goood! Weird wet stuff taste good! Where we going?'
He started searching his clothes for things to amuse himself with and found his deck. 'What's this?' He pulled out a card and started to slowly sound out the letters. 'D a, a, r, d,a,r k, d,a,r,k dark, that's it dark! Mmm, a, g, i, c, i, a, n, Magic-an Magician!' "Dark Magician!" Yami exclaimed triumphantly. The card glowed and Yami laughed delightedly as the Dark Magician appeared.
"Hi, I'm, um, I don't know who I am weally, but I like you! Can we be fwiends?"
Okay, for any of you who don't understand Yami, thinking that he is useless and has no place where he is, has regressed to a childlike state. He's gone insane.