Disclaimer: I do not own Kingdom Hearts, which makes me sad :(
The idea came to me very suddenly XD Enjoy!
Prologue
I was 7 years old the year I went to Twilight Town with my parents for Summer Vacation. As the Destiny Islands were close to where we were staying, we decided to go to one of the beaches there. Well, I went to the one of the beaches, as my parents let me explore.
It was my second day when I decided to go to one to one of the beaches. I left a note for my parents, who already knew that I was going. I grabbed my stuff, before I ran out of the chalet, and down the road to the beach.
I hadn't been there long when I decided to go for a swim in the sea. I dumped my bag and towel in a place where I could still see them, and began to wade in the salty water. When I started to swim too far out, I got a cramp in my leg, and couldn't swim back to the shore. I was afraid. I was alone, and I couldn't scream out, because no one, not even my parents, could hear me. I was just splashing against the water, hoping someone would hear me and help me. And no one was around. Until I noticed someone swim towards me. Against the bluish-green sprays of the water, I could see that the person had short dirty-blond hair, before realizing that it was a boy. He fought against the waves to get to me, before putting his arm around my waist, and dragged me back to the shore.
Once we were sitting on the sand, I managed to get a look at his face. He was about my age, and really cute, with piercing green eyes that looked really pretty. He was looking at my leg, making sure it was Ok, and then looked into my eyes, and blushed, which made me blush.
"I'm Demyx," He said, with a cute smile on his face. "Who are you?"
"I'm Kai," I replied, "I've come to spend the summer here with my Mum and Dad."
"Really? Where do you come from? I've lived Twilight Town all my life," He said, still smiling.
"I live in Radiant Gardens. Me, Mum and Dad are staying in one of the chalets down the road," I told him, hoping that if he knew where I was staying, he would come to see me again.
We spoke for a few hours that day, just talking about our lives. It turns out that he was 8 years old, and that his birthday was a few months before mine, which was in June. When my parents came to get me from the beach later on, we promised that we'd meet again tomorrow, at the same place. And we did.
I spent every day of my vacation with him that year. When it was time for me to leave, we both cried, and wouldn't let each other go. I was sure that I'd fallen in love that summer, in love with the boy who saved my life. But I never saw him again after that, and while I went back home and carried on with my life, I'd always felt that there was something missing, that I had left a part of me with him. With Demyx.
Hope you enjoyed it :) Just the prologue, will update soon, when it actually is 10 years later :)