This is really short and kitschy (is that a word?
dict thinks so) at least my version of it.
It was only a teardrop in time, one moment stretched out, and they met at the brink of destruction, a split second before the world ended.
"I guess this is goodbye now," Ryou said, swallowing hard. He'd always known this day to come, and he had worked for it like the spirit did, even if no one ever knew.
"Yes, this is goodbye. Thank you for being there," his Darkness answered, almost looking sad.
Ryou wasn't crying. All that fear, all those moments of doubt and now he was almost glad it was over, a lifetime of suffering, 3000 years of waiting and the shared moments in between: This was how it was supposed to end.
"I didn't have much of a choice," he replied, but smiled.
"You had the same choice everyone had. You chose darkness."
"I chose you."
They kissed, and the universe exploded in a flash of bright, white light.
One day, I shall make a real, multi-chaptered fic out of it.