In the building in CP_Well, three alicorns were performing an experiments. Twilight, Brutalight and Brutwilight. The desks, of course, had tons of papers and documents sitting on them. Twilight was checking the machine system, Brutalight was connecting cables, Brutwilgiht was inserting the fuse.
"So...you think one of Lyra's theory is true? Combining humans with ponies?" asked Brutwilight as she accidentally dropped the fuse.
"Hey! Watch it!" Brutalight yelled as Brutwilight was heard mumbling as she put the fuse in.
"Yes, it'll work. After meeting you two, I know that we can be good friends." said Twilight as she activated the machine, the machine produced wind-up sound as well as computers in the room started to make beep-boop sounds.
"Alicorn's a master race. Plus, I'm impressed of how you and your friends connected this and Equestria dimension together." said Brutalight as Twilight giggled.
"This won't be complete without help from you two." said Twilight. "This will prove that Lyra's theory is true."
"After this, we're off to kill somebody." said Brutwilight as Brutalight smirked, both of them filled with lust for violence and death.
Twilight sighed as she walked toward the control panel. "Who's gonna go first?" Twilight said, Brutalight and Brutwilight stared right into her face. "Oh....me?" they nodded. "Ok."
Twilight stepped onto the platform. Brutalight and Brutwilight positioned themselves at the control panel.
"Here we go." said Brutwilight as both of them activated the machine, Twilight braced herself by taking a huge inhale. After a while, the top off the machine somehow started to sparks and the computer displayed that the machine was overheated.
"Oh no." said Brutalight as the two mares tried to fix the problem, the machine started to create more and more sparks.
"Buck!" Twilight tried to move, but was struck by the sparks, knocking her out. As the two mares were trying to fix, the sparks hit them, knocking them out, too.
LATER
"Brutalight? Brutwilight?" Twilight slowly opened her eyes, her whole body was numb. Barely able to felt anything. She slowly stood up, walking with slight limp. Her vision was blurry, couldn't see anything beyond 10 feet.
"Twilight!" Brutalight's voice echoed inside her mind.
"Where are you two?" Twilight asked.
"I don't know!" Brutwilight replied. Twilight slowly walked towards her room, her body started to feel normal again. Twilight slowly walked to the desks, she was frozen in shock when she saw herself by the reflection on the mirror.
Her coat became dark, her pupil were shrinked like Brutalight's, her mane and tail were mixed with like Brutwilight's and Brutalight's, her cutie mark became two crucifixes, with a jarate in front, surrounded by small white stars.
"Oh no......" Twilight said in horror as she heard satisfying laughs inside her mind. "No....It can't be! IT CAN'T BE!" Twilight cried as she found herself being trapped with Brutalight and Brutwilight inside her body.
"This must be what Christian Brutal Sniper felt for the whole time." Brutalight said as she giggled.
"Now, you're our vessel, Twilight. We're in control." said Brutwilight. "Now, go get some kills, so we can watch it. You do it, we watch you. Clear?"
"I WON'T OBEY BOTH OF Y-" Twilight's speech was cut short by huge headache.
"We're not asking you. We're forcing you." Brutalight said as she used her power as almost-dominant soul to play deafening high pitch sound inside her head. In other words, they were the voices inside her head, capable of causing headache, producing extremely high pitch voice to torture Twilight mentally. Twilight was still in control of her body, but in almost to no control. Making her their puppet.
"STOP! STOP IT!" Twilight grunted and groaned, she fell down as her front hooves on both of her temples. "PLEASE! I'LL DO ANYTHING! IT HURTS!" Twilight begged for mercy as Brutalight stopped the sound.
"Do what we ask, or else it'll happen again" Brutalight said, Twilight slowly walked out of the building, her breathing was rapid. She didn't want to become a murderer, but she's forced to become one. Twilight slowly walked with her new body, she reached the building which is built above the train track. She saw BLU Scout standing all alone.
"You know what to do with that, right?" asked Brutwilight.
"Kill him, slowly. I like to see him beg for mercy." said Brutalight.
Twilight summoned a katana, holding it with her magic. She was still nervous, to the point that her katana was shaking. Twilight thought hard for a moment, before she made the katana disappeared.
"I can't put myself to do it.....Sorry." Twilight sat down, thinking of her act. Brutalight caused her a huge headache again, Twilight groaned.
"Do what we ask!" shouted Brutalight.
"ARGH! OK! OK! Just...stop." Twilight begged again as Brutalight made the pain stopped. Twilight summoned her katana once again, she sneaked up behind the Scout and landed the killing blow on him with a stab through his head.
"There." said Twilight as she thought hard about what she have done. Twilight never wanted to be a murderer, but nobody nor nopony can help her. As their souls were stuck in one body.
"It ended too soon, don't you think. It didn't amused us." Brutalight said in disappointment.
"I need to go back, please" asked Twilight.
"Why?" asked Brutalight.
"I need to....do some stuff." said Twilight.
"What do you think, Brutwilight?"
"OK, she can. I don't care, we have her as our slave now." Brutwilight answered. Twilight walked back to her room, she thought that she must find a cure, or else she'll be stuck forever. But what will happen next? Next Chapter.