Seventeen Years Ago:
Taiyang Xiao-Long and Raven Branwen married and had two children.
Twins, two sisters, alike in everything besides hair and eye color.
The elder sister, Yang Xiao-Long, had blonde hair and lilac eyes.
The younger sister, Rhea Brawen, had black hair and blue eyes.
"I know people say this a lot." Taiyang smiled in the hospital, cradling Yang in his arms. "But wow, we made some great-lookin' kids."
"Really?" Raven rolled her eyes, holding their other daughter. "I think we'd better let Qrow and Summer in. If we don't, they'll probably explode."
"In that case, let's only let Summer in."
"Tai..."
"I know, I know..."
/\/\/\/\
Sixteen Years Ago:
One year after the twins' birth, Raven Branwen vanished, taking little Rhea with her.
"Raven?!" Taiyang ran around the house as Yang cried. "Raven?! Rhea?! Raven?!" He came back to the twins' room and picked Yang up, cradling her and trying to calm her down. "Shh... Shh... It's okay, Yang. It'll be alright."
/\/\/\/\
A figure in red and black watched from a tree, looking in a window, holding a blue bundle in one arm while the othe held onto a branch.
Two red eyes closed, almost like their owner regretted her choice.
The moon vanished behind a cloud, and when it came out again, the figure was gone.
/\/\/\/\
Fifteen Years Ago:
Taiyang remarried, having a daughter named Ruby with his team-leader, Summer Rose.
He never told Yang of her twin, only wondered how long it would be before the two reappeared.
And when Raven and Rhea did appear, what would his lost daughter have become?
Taiyang held Yang as Summer cradled Ruby.
"Why would Raven only take one?" He asked. "Or any of them? And why would she leave?"
"I don't know." Summer admitted. "But we'll get both of them back someday. I promise."
"Thanks, Sum."
/\/\/\/\
Seven Years Ago:
A figure in red and black walked through a forest, a small figure in black walking by her side.
"Mom?"
"Yes, Rhea?"
"Am I going to be a Huntress like you, someday?"
"Do you wish to be?"
"Yes."
"Good... I will train you as best I can, but your future lies at Beacon. I will ensure that you are ready for their entrance exam."
"Thanks, Mom."
"Of course, my little bird."
"... Mom?"
"Yes?"
"I had the dream, again."
"The same one?"
"Yes. The one where I look in a mirror, and the reflection is the same, but... A little different. The girl on the other side is blonde, with purple eyes. Do you think it means something?"
"It might... It's best not to dwell on dreams, little bird. Here and now is what matters most... Do you understand?"
"Yes, Mom."
/\/\/\/\
One Year Ago:
In six years, Rhea Branwen had grown into quite the Huntress.
Her battle-outfit was much like that of her mother, except instead of red/black, it was turquoise/black. Also, the hair-tuft at the side of her skirt looked more like a bird's wing that stretched to the back of the skirt, and the girl didn't wear a Grimm-mask. The emblem on the skirt-panel was a black bird in flight.
Her weapon was like her mother's sword (except shorter and with a silver sheath and hilt, resting at her hip), along with two silver bracelets on her wrists that could become ice-Dust-firing gauntlets.
They had discovered her dual-semblance some time ago. The girl could both change into a bird (a raven, like her mother) and activate a red-eyed state in which every hit made her stronger, and her rage gave off an icy power.
In the forest, Raven inspected her daughter carefully, mulling over years of training and improvement.
"You are ready." Raven finally announced, giving a small smile. "It is time for you to take Beacon's entrance exam." Rhea beamed, bowing her head.
"Thank you, Mother... What will you do while I am away?"
"Probably mess with your dumbass uncle some more. You know how he is. I can't resist." The two laughed, and Raven placed a hand on her daughter's shoulder, serious. "Rhea, while you are at Beacon, you may come face-to-face with some demons. Mine, and yours. But know this... I will always be your mother, and know that all I've done has been what is best for you."
"I know, Mother." The two hugged, then Raven stepped away, pulling out her sword and slashing a portal. The red-eyed Huntress looked back once, both Branwens smiling one last time, then Raven vanished in the red spiral. Rhea sighed, then walked away.
/\/\/\/\
While all of this had happened, Yang Xiao-Long had trained at Signal Academy. For years, she'd tried to find her mother, and she was still looking.
The blonde-brawler had her own dual-semblance: a red-eyed state in which every hit made her stronger and a flaming rage, and the ability to change into a falcon.
She rarely used her second semblance, though.
/\/\/\/\
Three Months Ago:
"Next for the Entrance Exam..." Glynda Goodwitch looked down at her scroll, and her green eyes widened slightly. "Rhea Branwen."
"Branwen?!" Qrow Branwen (who was overseeing the exams with the two Beacon Professors) asked, alarmed. His lost niece was there?!
"Branwen?" Professor Ozpin asked. "As in Raven Branwen?"
"Indeed." Goodwitch looked up at Qrow, eyebrow raised. "You seem surprised by this."
"When my sister ditched Tai, she took Rhea with her. Though I've run into Raven a few times, no one's seen Rhea for sixteen years... Her own twin doesn't know she exists."
"That would be Yang Xiao-Long." Ozpin noted. "We accepted her into Beacon a few trials ago."
"Should I send her in?" Goodwitch asked, frowning. There was a pause, then Ozpin nodded.
"Yes." He replied. Ozpin hit a button, and a door opened. It was silent as footsteps echoed in the arena, and three pairs of eyes widened as a figure left the shadows, blue eyes looking up.
/\/\/\/\
Rhea Branwen sheathed her sword, the trial completed. The three professors stared in shock as she looked up, expression calm in the midst of such destruction. The simulation-Grimm had been slaughtered with quick and precise ease, their holograms dissolving. Twenty-five Atlesian Knights were in pieces at her feet.
This had all been done in less than three minutes, without the use of a semblance or a sweat broken.
"Well..." Goodwitch blinked a few times, stunned. "She surely is her mother's daughter. But sir, she is highly unpredictable. And with the presence of Yang Xiao-Long, it would not be wise to accept-"
"Let her in." Ozpin ordered. Qrow and Goodwitch gaped.
"Oz, this isn't a good idea." Qrow warned, concerned. "The last thing I need to come back to after this mission is drama. Yang and Rhea probably don't know the other exists! And Ruby-"
"To keep two twin-sisters apart would be just as devastating as bringing them together... We will accept Ms. Branwen into Beacon."
"Yes, sir." Goodwitch hit a button, and a green light shine in the arena. The three watched as Rhea smiled, bowing her head, then turned and departed.
It begins... I only own my OC! Please read, review, check out my other stories, etc. Thanks!