(WARNING: CONTAINS SPOILERS, HIGHLY RECOMMENDED YOU READ SAIYAN OF EQUESTRIA PONY-DISCORD SAGA)
Crossover Saga
Chapter 1: A Blue Box?
Normal days, when the sun is shining, you go about your daily schedule, go to school, have fun with friends, eat the most delicious foods that your adoptive parent could cook. The life anyone, or anypony always wishes to have.
Unfortunately, saiyans have a tendency to never, ever, have a normal day. Especially if said saiyans are a pair of human/saiyan hybrid twins who just love to go out and have fun and have a far bigger amount of curiosity than an average pony.
These two human saiyan hybrids are eight year old Ken and Kira Altarmore-Heartstrings. Adopted children of Lyra Heartstrings, and the son and daughter of the Full-Blooded saiyan Z-fighter, Chris Dell aka Karmel. Who was sealed inside Ken after an inter-dimensional accident causing him to nearly fade away due to Ken's original dimension's specifics. The Z-fighter sealed himself inside the young human boy changing him into a human saiyan hybrid, who was later subjugated to experimentation for two years before making his way into the world of Equestria via teleportation.
After arriving, the young boy was adopted by Lyra Heartstrings, his now legal guardian, or mom. A few days later, Ken was struck by an incomplete cloning spell, but due to his unique structural DNA and it never designed to copy a species beside a pony, the spell shifted creating a near twin version of a permanent Kira Altarmore-Heartstrings. Who was also adopted by Lyra and is now the twin sister of Ken.
Many things happened since her 'birth', these things, or events, drastically increased the power levels of the twins making them stronger than any unicorn could ever be. Through not the strongest of the world, Ken and Kira do not mind it, they prefer to just spar and have fun with their friends the Cutie Mark Crusaders, constantly causing Ponyville troubles with their now upgraded attempts at getting the CMC, their cutie marks.
Celestia sun shined over the town of Ponyville, the clock arms moved past 1 o'clock. In the lovely house of Lyra Heartstrings, two saiyan hybrid twins finished their homework from school, eager to begin playing outside.
"And then you but that number right there, and tada!" A young eight year old girl said, a brown monkey tail wiggling about from her back.
"Thanks Kira! Now we can go play!" The girl's twin, a eight year old boy yelled with joy.
"Finally, it took you like forever to finish math work!" She said to him.
"Well sorry! Math is hard, and it's boring!"
Kira rolled her eyes. "It's boring no matter where you live!"
"Hehe, your right." He said, scratching the back of his hair as she stood up and put the homework into his backpack.
"Now let's go!" Ken yelled.
Kira smiled, and went for the back door to the backyard, her tail wagging in happiness. The boy, Ken, followed her with equal enthusiasm.
The two made their way into the backyard, they looked to the broken tree, strange how mommy never got that removed. They skipped happily to the middle of the field. They turned to each other, both grinning as they felt their inner urges, their saiyan instincts start to make them more happy for what saiyans do best, fight.
"So sis, how shall we it this time?" Ken asked, as he slipped into his fighting a stance, a style resembling Gohan's which is a hybrid of both offense and defensive styles.
"Well, I was thinking martial arts and regular Ki blast only." Kira responded with glee, slipping into her aggressive stance similar to Vegeta's.
"Ok, um, see that cloud? When it reaches the sun we'll start ok?" Ken said, pointing to moving cloud.
"K." She shortly replied.
Seconds past, then the cloud touched the sun and in a split instant, the two hybrids vanished in great speed before meeting in the middle quicker than you could blink. Kira's right fist connected with Ken's left, they held it for three seconds before Kira shot her leg to his side, but Ken front flipped over her and tried to kick her in the back, but Kira's tail grabbed his leg and she swung him toward the ground.
He landed on his hands and back-flipped back to his feet. He looked up and shot two Ki blast from his hands, he charged when the two blast shot at the dirt, making smoke rise from the ground.
*BANG!*
That's what nearby ponies would of heard, when the fist of the two twins collided in the rising dust, the ground beneath them cracked open from the force of the pressure.
"Stop going so easy on me Ken!" Kira protested.
"Ok, ok." He replied.
Ki auras burst into existence, they disappeared into a flash of blue, in the sky the two could be seen as speeding flashes of light. However the two stayed within the boundaries of their enlarged back yard, thank goodness it was enlarged to compresant for their spars, it was enchanted just for them by non other than Twilight Sparkle so it would repair itself after every spar.
"AHHH!" Kira screamed, as she sent a barrage of Ki blast towards Ken.
"Uh oh!" He flew up, the Ki blast following him, he frowned slightly, he spun left and right, moved both upward and downward, still it persistent. He heard Kira laugh loudly in his predicament.
"I thought you said no Ki techniques!" He yelled to her as he avoided another homing Ki blast.
"Um oops, I must've lied." She said innocently.
He turned his body back as he flew, and began to chant one familiar signature technique.
"Ka...Me...Ha...Me..." A compressed ball of blue Ki energy collected within the connected palms of the saiyan hybrid.
"HA!!!!!!!" He thrust his palms forward, a giant wave of Ki bursting from the compressed ball, completely devouring the homing Ki blast and crashing into Kira's defenses.
"Grrr, Wah!" She sounded out, as she pushed her own Ki and stopped the Kamehameha wave from hurting her.
Only to receive a kick to her abdomen that sent her crashing onto the ground below, into the backyard. Ken charged back down and landed on the ground, he looked at his sister who had gotten back up and fired two regular Ki blast at him, he sliced through them with his hands. The two charged at each other before suddenly being sent back the opposite direction!
"Whaa, oof!" Both the twins said out as they rolled across the ground from the unseen force that pushed them.
Ken got up, rubbing his head as it collided with one of the rocks. That hurt, hopefully that won't happen again. His eyes scanned the area for his twin sister, he saw her and instantly rushed to her side.
"Sis! You alright?" He said worried for her well-being.
Kira stood up and rubbed the dirt off herself. "Yeah Ken, I'm alright, what was that?" She suddenly questioned.
They both looked toward the center of the backyard to see a big blue box! Naturally their human curiosity instantly wanted them to investigate, Ken fell victim to this curiosity easily. He started walking toward it.
"Ken! What you doing! It could be dangerous!" Kira yelled at him, worried about this mysterious box.
"I'm sure we'll be fine! I'm a super saiyan remember? Not many things can beat me!" Ken reassured her.
"Your not invincible and you can barely control it!" Kira replied.
Ken waved her off. "Look Kira, I'm pretty sure a big blue box can't do anything harmful."
Ken walked up to it, he tried to read the words, but they were not the pony language he learned, through they looked...awfully familiar. He saw a door handle, and grabbed onto it, he attempted to open it only to find it won't do so.
"Huh?" He said, he pulled harder, but still no deal.
"Um, Ken?" Kira said, walking cautiously closer.
"UGH! OPEN! OPEN! OPEN!" He yelled as she kept trying, with all his might to open the door, even with Ki enhanced strength. Finally having enough, he stepped a few feet back and prepared a Ki blast.
"KEN! DON'T!" Kira screamed at him.
"Why? I wanna see what's inside!" He complained.
"You don't have to blast it! Look it's opening now!"
Sure enough, the door began to open.