Kingdom Hearts: Riku's Search
Oni Of Light
Prologue
Darkness fell and the heartless returned. Riku glanced over at Kairi and drew his sword. "Let's go." He dashed forward and slashed through the air violently. Kairi was at his side cutting through the air with a pair of daggers. "Sora should be up ahead." They had been searching for years and now it was time to go and save him.
The whole story is actually a mystery but to Riku's perspective it was a violent story that you should only hear from the beginning so here it is.