Authors Note: I have been thinking about writing this one for a while now. I got great reviews on my other stories so I finally decided to try something a little more challenging. Unlike my previous stories, this is slightly AU and Souta is the main character.

Disclaimer: I will only post this once so it stands for the whole story. I do not own Inuyasha but I do own Kasei.

Prologue

Five year old Souta Higurashi laughed as the bright green ball bounced against the pavement in front of the family shrine. His mother smiled as she watched her son playing. Her daughter Kagome was inside with her grandfather enduring another history lesson. The front door opened up and Kagome stood there waving the phone in her hand.

"Mom! Phone for you!"

Mrs. Higurashi stood up, "Souta, I'll only be a minute. Don't go anywhere, okay?"

Souta nodded, "Okay Mommy!"

He continued to bounce the ball when a gust of wind stole it from his hands. Without thinking, Souta raced after the ball. He followed it as it rolled down the steps of the shrine. The ball finally came to a stop in the center of the road that ran past the entrance. Winded from his run, Souta walked out into the road. There was a loud beep and Souta turned to see a car coming at him. The driver slammed on the brakes but it was too late. Souta screamed as the car sped closer to him. It struck and the young boy went flying backwards onto the asphalt.

Kasei floated above the city of Tokyo. How could he have been so foolish? Thinking he was safe, he had let his guard down. And that's when they attacked. He had been running from the demon hunters for hours, but they finally cornered him. He was outnumbered, fifty of them, one of him. The odds weren't good. Within seconds of the start of the fight, Kasei was killed. Transferring the last of his energy to his soul, he was able to escape in spirit. But now he was going to die again. If he didn't find a new body to inhabit, he'd disappear forever. Kasei turned his attention to the ground when he heard the screeching of tires. A car had stopped suddenly and the driver was getting out and running to a human boy sprawled in front of the vehicle. Seeing this as his chance, he dove down.

The boy was so young and his injuries were very serious. There was no way he was going to survive. If Kasei acted quickly, he'd be able to save himself and the boy. When a human body dies, a window opens to release the soul. In that brief second, Kasei would be able to push the boy's soul back into his body as well as enter it himself. Floating over to the boy, Kasei spoke to him...

Little boy. Do you wish to live?

W-Who are you?

My name is Kasei. I am a fire demon. You are dying, but I can save you. All I ask in return is that you share your body with me.

I-I don't wanna die!

Then we have a bargain?

Yes...

Kasei felt the boy's spirit slip away. He watched as the soul left his body. Quick as lightning, Kasei sped forward. He grabbed the boy's soul and with it, entered the body of five year old Souta Higurashi.

Souta's heartbeat started again. He was aware of the sounds around him but he couldn't move. The pain was too much.

Do not worry little boy. You are alive.

It hurts...

I know. I am feeling the same pain you are. It will take time for your wounds to heal, but with me, you will recover even faster. What is your name?

Souta Higurashi...

You must be strong Souta. I will help you.

Souta slipped into unconsciousness as the sound of sirens came closer. Somewhere, he could hear his family calling his name, but he was too weak to answer back...

Author's Note: Hope you like it so far! Please review by clicking the little button at the bottom of the screen!