Dagger From the Mirror (ROTTMNT/TMNT 2012 Crossover Fic)

Through the Mirror, Part 1

"Raph, heads up!"

Leo grinned, holding up a volleyball and throwing it as hard as he could towards the sky, in his older brother's general direction. The slider had found it on a sidewalk during their patrol, abandoned by some random kids earlier that day. So of course he had stashed it away for future use. The second that patrol ended, he raced back to grab it and showed it off proudly to his team. They still had around an hour before they were going to need to head back, so Leo had decided that'd be enough time to toss the ball around for a bit, and wasn't going to take no for an answer when he suggested the idea.

The argument he prepared in advance found itself to be unnecessary, however, since his brothers and April had agreed immediately. They deserved some fun and relaxation! Well, scratch the relaxation part; the gentle tossing of the ball back and forth had quickly evolved into a competitive game of Don't Let the Ball Touch the Ground. Complete with screaming and diving to the concrete to keep the ball in the air, it was an action packed chaotic match, one that Leo was sure he was winning. He hadn't dropped the ball once!

"I got it!" Raph shouted, quickly hitting the ball back up while it was still above his head. The volleyball flew across the rooftop, before Mikey ran and jumped. He whooped and, with a double front flip, held up his hands and smacked the ball towards April.

"To you, Apes!"

"Heads up, Dee!" April shouted in return, before the ball even made it to her—she knew Donnie needed a couple extra seconds to prepare. She grinned and put her hands together, hitting the ball up with the sides of her closed fists. It shot off towards Donnie, who looked mildly panicked for half a second. He shook his head and then spun into action.

Donnie grinned, "Oh, I got-"

"I GOT IT!!" Leo sang, jumping in front of him and slapping the ball back to April. Donnie groaned, glaring at his (in theory) twin brother.

"I had that!" He crossed his arms across his chest. Leo laughed.

"Well if you had it, then why did I get it~?" Leonardo teased, playfully punching his brother in the shoulder. Donnie groaned and shoved him away.

"Whatever. You just can't stand to be not in the spotlight for half a second, can ya, 'Nardo? Need the attention?" He sneered, shoving a finger into Leo's plastron. The blue themed turtle frowned for half a second, but then took to his natural response to insults. With a grin and double finger guns, he winked.

"You know it!"

Donnie rolled his eyes as he shook the insult off. Knowing Leo, he definitely did that on purpose just to annoy him. Dumb-dumb never acknowledged his insults.

"Ugh, whatever," Donnie sighed, "Let's just get back to the..." He trailed off, as he turned back to their main group to see that the match had stopped. His eyes locked on the reason why. "...game..."

A large, pinkish-purple swirling portal had opened up on the opposite side of the rooftop. It emitted an odd warbling sound from within, but that wasn't the strangest thing about it. No, that honor went to its shape. Usually, the portals they saw were circular or oval in shape, but this one was a perfect triangle. Sharp edges and angles, like it was cut from paper rather than a hole in the fabric of the universe to travel through. It was very weird, and no one there had ever seen one quite like it. Neither the color nor the shape looked like the familiar portals Leo could create.

Regardless, four accusing looks were shot towards said brother. Leo folded his arms across his chest stubbornly.

"Hey, don't look at me!" He pointed to the corner of the building, a few yards from where he was standing, "I didn't do it! I left my sword over there."