Rainbow Dash and Sonic's Adventure

"Citizens of Ponyville!" Princess Celestia announced. "We have all been saved by Shadow, Sonic, and Rainbow Dash! We must honor their acts of bravery!"

All of Ponyville bowed before them, as did Princess Celestia, Princess Cadance, and Shining Armor. After that, the princess put medals around all the heroes' necks.

***

"Wow, that was a pretty cool ceremony!" Sonic exclaimed as he and Rainbow Dash watched the sunset.

She nodded in agreement.

"Y'know Sonic, ever since I first met you, I've been dying to have a race." she said.

"Is that a challenge?" Sonic smirked.

"You bet!" Rainbow Dash replied, flying up out of the spot she was lying down on.

"One lap around Equestria?" Sonic suggested as he stretched his legs.

"Let's do it!" Rainbow Dash said determinedly.

Both got into starting positions.

"Ready... set..." Sonic and Rainbow Dash spoke together. "GO!"

The two took off at the speed of sound, Sonic leaving a blue trail behind him, Rainbow Dash a colorful one. Suddenly, Rainbow Dash did a Sonic Rainboom.

"Hey! No fair!" Sonic shouted jokingly. "Alright! Let's do a Sonic Boom!"

He picked up speed so fast that he did a Sonic Boom, boosting his speed. Just as he and Rainbow Dash were about to pass Princess Celestia's castle, Rainbow Dash nudged Sonic, trying to knock him over. He returned the action, and pretty soon they were shoving each other back and forth. Rainbow Dash toppled on top of Sonic and they ended up in a giddy ball of laughter. Rainbow Dash nuzzled her head into Sonic's neck, making him blush. Just as they were about to kiss...

"You disgust me, Sonic." a dark voice growled.

The couple turned around to find Shadow walking towards them.

"Princess Celestia has an urgent matter she needs to discuss with you two." Shadow said.

The trio walked to Princess Celestia's castle.

When they got to the castle...

"What do you mean Sonic has to go home!?" Rainbow Dash cried.

"Taimuwāpu, Tikal, and I talked about it. I know what happened now. You see, Taimuwāpu was one of the guardians of time. Apparently, his tribe has a lot to do with the works of spiritual energy. He tried using the Chaos Emeralds at the altar to protect it, but, unaware of what he was doing, he accidentally summoned the negative Chaos energy. The energy took over his body and he turned into a power-hungry tyrant. Since it came from your world, it is in Equestria's best interest that we close off the link to our worlds for good." Princess Celestia explained.

"That means... I'll never get to see Sonic again?" Rainbow Dash asked sadly.

"I'm afraid so. I'm sorry, this is what needs to be done." Princess Celestia said softly.

"No! I can't let this happen!" Rainbow Dash sobbed.

"Rainbow Dash, a whole city of Crystal Ponies lost their lives in that avalanche that Taimuwāpu caused. We can't risk anything else-" Princess Celestia was silenced by Sonic's words.

"Listen, Dashy, the princess is right. My world is put in jeopardy all the time. I can't risk losing you over something that came from my world. I'd never be able to live it down." Sonic comforted her.

"Sonic, I don't have all day. I want to get back to Rouge and Omega." Shadow groaned.

"But, I'll come with you! We can fight battles together!" Rainbow Dash plead.

"No, you are very loyal to me and to your friends. And this world needs that loyalty... you are the Element of Loyalty." Sonic smiled.

Rainbow Dash smiled back as tears streamed from her eyes. Sonic hugged her and kept her there for a few minutes. Rainbow Dash looked up at him, and they finally kissed. A real kiss, neither of them were dead or interrupted.

"Ugh... gag me to death." Shadow muttered.

When they broke the kiss, Princess Celestia spoke,

"Sonic, evil could be stirring in your world as we speak. I'm sorry to break you two up, but..."

"I know, I need to go." Sonic interrupted her once again.

Shadow used the Chaos Emeralds to create a portal to their world.

"Tikal and Taimuwāpu are already back in your world. Good-bye, Sonic, Shadow, you will be greatly missed." Princess Celestia sighed.

Shadow didn't hesitate to jump through the portal. Sonic, however, took a good look around. His last glance was towards Rainbow Dash, who's face brought him to tears. Sonic slowly backed up towards the portal, not taking his eyes off her.

"Good-bye, Dashy." Sonic waved sadly.

"Bye..." Rainbow Dash's cracked.

She wanted to speed in there and pull him out. Yet, she knew that he would have to go either way. She watched as Sonic slowly faded away into the portal.

"Now, I'll seal off this portal forever." Princess Celestia said.

Her horn lit up and all Rainbow Dash could do was hope that someday he would return. The day they would finally be reunited.