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"Chaos Emerald?" I blinked.

As puzzled as I was overwhelmed by the moment we were all in, I glanced down to the green diamond the blue hedgehog referred. The talking critter approached me and grabbed the mysterious gem, staring down at it too.

"What's a Chaos Emerald?" I asked.

"GAHH!"

A familiar voice cried out as I spotted Riku get knock back towards the hedgehog and I. The Keyblade Master was sent beside us, sliding towards the dark sea with his keyblade and scaring me in the process.

"Riku!" I cried.

"Are you okay?" The hedgehog called.

I then ran over to my best friend, discarded Kairi's keyblade from my left hand, and offered my assistance. Fortunately, Riku simply refused my help as he slowly stood backup with his weapon in his hand. Unfortunately, our foe seemed like it was about to repeat history. Like what it did to Kairi, the Demon Tower pointed its spinning long head at Riku and I, planning its next move on us.

"HA!"

Fortunately, the hedgehog had a plethora of surprises in store for us as he attacked the Demon Tower by surprise. Two rapid aerial spin dashes became enough to cut the shadowy monster down to size, defeating some that merged into it.

"I'd say it's a good time to leave this gloomy beach!" The blue animal suggested.

"Either said than done." I replied.

"Huh?" The hedgehog blinked.

"It's complicated, but we know a way out of here." Riku responded.

"Well, then get that girl and lead the way before…"

The blue hedgehog was then interrupted by the Demon Tower reforming behind him. Without Riku's orders, I went over to the unconscious princess and picked her up over my shoulders. Her weight was a little heavy to carry, but I didn't have a choice. As a Guardian of Light, it was my duty to protect those who possessed the pure light. Those who are pure hearted and Kairi was one of them.

"Hurry, Sora!" Riku called out.

"I got her!" I responded, running back to the Keyblade Master.

With the princess having a restful piggyback ride on me, it was time for the hard part. In order to return home, the Door to the Light needed to appear before us. The hard part was simply summoning the door since I already had my hands full with Kairi. Our escape was in Riku's hands as he pointed his keyblade towards the sun. A laser was then shot from the tip of his weapon and hit the sun, revealing the doorway to our freedom.

"The doorway's ope…"

Before I could even finish my call to the blue hedgehog, the Heartless took us by surprise. The swarm of Shadows quickly surrounded us, trapping us in a circle of darkness. Riku was able to defend himself, but the Princess of Heart's protection gave me a problem. It was difficult for me to use my keyblade while carrying Kairi, making me a sitting duck.

"Oh no!" I gasped.

"HANG ON!" The blue hedgehog cried.

In a flash, the blue critter plowed through some rows of Shadows until he stopped in front of us.

"Is that light show our exit?" The animal wondered.

"Well, yes, but…" I nodded, only to be interrupted.

"Grab my hand!" The hedgehog demanded.

He took my left hand and Riku's without any hesitation as I noticed the Shadows beginning to glow orange. They were about to charge at us and reform into their Demon Tower form. Fortunately, it seemed as if the hedgehog had a plan.

"Chaos Control!" The blue critter shouted.

Like what happened on Destiny Islands, a green light began illuminating brightly as I felt the "Chaos Emerald's" energy coming from the hedgehog's glove. The light engulfed us, shrouding our sights of the horde of Shadows; which was a sight to behold. Before we knew it, we were returned to the peaceful islands that Riku and I called home.

"Oof!"

We all landed back onto the calming beach, but Kairi's weight managed to knock me ono her. My back ended up lying on the young princess's stomach, causing my heart to rapidly accelerate in embarrassment as I quickly rolled around to check on her.

"We're back!" Riku exclaimed.

"It sure looks peaceful than wherever we were just at." The hedgehog observed.

"You don't even know the half of it." I replied.

"Huh?" The animal muttered.

"Sora, you stay here while I'll go and lock the door." The Keyblade Master ordered.

I gave my friend a serious nod; which gave him permission to do what needed to be done. One of us had to seal the Door to the Realm of Darkness or else the Heartless will traverse over to the peaceful islands. However, I felt as if Riku wanted me to look after Kairi and our new friend. He knew that the princess and I shared a special bond and he also figured I would explain everything to the blue hedgehog.

"Hey, thanks for saving us,...uh…" I paused.

"Sonic!" The critter spoke.

"Huh?" I muttered.

"I'm Sonic the Hedgehog!" He introduced himself.

"And it was no problem! I'm use to stuff like that." He accepted my thanks.

"Really?" I smirked.

"Although, I've never seen those creatures before." Sonic mentioned.

"You mean the heartless." I clarified.

"The Heartless?" The hedgehog repeated.

"Yeah, that's what they're called and that beach we were just on? That's their home realm." I briefly explained.

"Home realm?" Sonic blinked.

"The Realm of Darkness to be more precise." I replied.

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Next chapter will simply explain about the KH franchise and how Sonic came to the KH universe.