Only Vanitas and Xion get 10-chapter centric fics, because they have been declared as one-shot wonder buddies. One game, short life, awesome character, equals one-shot wonder.
Enjoy!
One day, I was just… born there. I was like a newborn child, unaware of myself, my being, or the reason I even existed. Master never explained to me why I felt nothing inside of me, nor would he tell me how long this would last. It wasn't like I cared that I felt like this, I couldn't even if I wanted to. All that changed when Master left and I saw what he had been telling me for weeks not to look at. It was a young boy around my age, with blonde hair and dulling blue eyes. Every time I looked at him through my mask, I felt something. It felt new, this sorrow I earned from a single glance. So many new things happened to me all at once. I felt something cool and wet on my cheeks; they kept coming, even though I wanted it to stop. I tried to hide my wet face from Master and he noticed all right. He knew I had been disobedient, and he knew what the wet things from my eyes were.
Empty creature from Ventus riven, to you, the name Vanitas shall be given.
My hands shook uncontrollably, and I could not take my eyes off of the other boy, not even to save my own life. Something inside me was just attracted to him, not physically, but to some extent that just being around him was satisfying. At the same time, I couldn't stand it, the thing inside my chest felt like it was in knots just thinking about him. I realized that this feeling was the urge to punish him, and the fact that I couldn't do it made my heart twist like that. From the moment I was born, I knew that the only ones to be punished were the weak… and my mind was screaming at me that Ventus was a weakling. He couldn't be, because I came from him and I wasn't the least bit weak… yet I couldn't get rid of that thought.
Go ahead Vanitas, kill him. He's weak, he let Master have his way. He deserves to die and you know it.
When I came back to his spot, I noticed he was missing. I didn't know what to do then, wait for him or look for him? He wouldn't be able to go too far, and Master will be back soon so he'll come back too… right? I didn't like it without the other boy, it made me feel empty again. In turn, I knew he was going to make me weak just like him. And now, when I did sleep, I felt all his feelings rushing over me. He gave me a light bubbly feeling that gave me warmth inside and out. It wasn't mine to feel, it belonged to him. Anger consumed me that night, and I turned around the next morning to see small pools of dark blue moving in a circle around me. One by one the pools formed into sleek humanoid creatures, with blue skin and red eyes like mine. Their arms and legs ended in points and I saw that they all had lightning-bolt shaped antennae. I at first wanted to poke fun at their triangular heads, amused at their strange appearance. One came close to me and whispered "Master Vanitas." In a voice that was so unclear that I almost missed what they said. I was their master? I reached out to touch one, and noticed they were very smooth and seemed to like being "petted." Things had taken a turn for the better, as I destroyed the monster that came from me, until I felt a stinging pain in the back of my head. It felt like I was being stabbed over and over. I started to get itchy on the entire upper half of my body; I felt like my skin was burning and freezing. The rest went numb, and I felt myself losing consciousness…
Master isn't pleased; he knows you don't like them. Your funeral, smart one.
I spend most of my time alone, exploring the cold, dry wasteland around me. I can't remember how long ago it was, Ventus leaving me here, and forcing me to feel what he felt. Happiness, warmth, and a sense of completion that stirred up the desire to be like him even if I couldn't. If I could barely "care" for myself, how would I be able to care for anyone else?
Just another mystery I'll never solve.
This is the rewritten beginning, when he first gains a grip on reality, understanding the situation he's in. I was listening to my KH mood setter, Bad Apple.