I don't own RWBY just my oc

It was late at night both Blake and Yang were awakened because in the bottom bunk Shadow was tossing and turning in his sleep from a nightmare it seems to be really affecting the young male Faunus if the whimpers coming from him were any indication of it.

Blake looked tiredly at her girlfriend, she seems concerned about Shadow then they saw Ruby getting off her bed and into her twin's bed.

"Luna it ok, The White Fang isn't here, you're safe here with us and the White Fang aren't going to hurt you anymore," They heard Ruby softly whispering to their male teammate.

Blake was confused as to why Ruby had called him Luna then she remembers their Uncle Qrow requesting a female uniform for Shadow as well because of his Gender shift Semblance.

"Yang does Shadow's Semblance allows him to change gender at will?" she whispers asking her girlfriend.

"Yes it does, her real name is Luna Rose and she wasn't born a Faunus, The White Fang had kidnapped her experimented on her for four months but because of what they had did seem to have traumatized her to the point where she now stays in her male persona and took on the name Shadow Rose," She whispered back, "None of us don't really like talking about it."

Blake knew from the look in her girlfriend's eyes that she blames herself for not protecting Shadow the best she could.

Soon his whimpers came to a stop as well his tossing and turning as he is now peacefully asleep in Ruby's arms, Ruby was asleep as well.

(-)

The next morning at breakfast Blake kept staring at Shadow since he been giving off a familiar scent then she quickly knew that he had gone into his Faunus species mating cycle thanks to his body originally being Female when his Semblance wasn't in use which made her wonder does his Semblance activates only when he decides to shift genders.

"If he's Ruby twin, how is he a Faunus well she is human? I know you had both human parents," Weiss asked only to be glared at by Shadow which sent a shiver down her spine as his glare has promised her pain.

So she decided it was best to keep her mouth shut and keep eating her meal When they were finished they went to Vale for needed supplies such as Dust, weapon parts, Shadow had wandered off from the group to see something that had caught his interest at a weapon shop window display it was an odd weapon, a sword that converts into a cannon.

(-)

He tenses up when another male Faunus walks up next to him looking at the same weapon, he then notices his uniform he was from patch Signal Academy.

"That a pretty badass weapon and the shop is Faunus friendly," He said.

"Yeah, I often shop here," Shadow says as he reaches for his sword feeling uneasy.

He then sniffed the air then look at Shadow.

"Whoa dude you smell like a girl in heat, do you have a sister in heat or something?" he asked.

"Something like that, Fox Faunus?" he asked back only to get a nod.

"Wolf?" he asked as well and Shadow nod.

"Name Kurama, you?"

"Shadow, you go to Signal?"

"Yep, wait your my teacher's son, dude we use to be in the same class and the whole school has been wondering what happen to you."

"Oh, um my uncle and dad had me transfer to Beacon to be with my sisters."

"Sisters huh, are they hot?"

"Really?" his right eyebrow was twitching.

The two young Faunus chatted among themselves about weapons, their lives in school, and friends, they even laugh when Qrow was brought up.

In the distance Blake was protectively watching Shadow, she saw the two exchange contact info then fist bump soon the fox Faunus was on his way and Blake walk up to her teammate.

"You should be careful when you're in heat," She told him.

He just glares at her.

"I got that you're Yang's girlfriend but don't bother go pretending you actually care what happens, I may be part of my sister's team but that doesn't make us friends."

He walks into the shop to purchase some parts for his Crescent Moon, even though he is a close-range fighter and been considering adding a long-range weapon feature to his Crescent Moon. He bought enough parts to build another Crescent Moon if needed.

Soon he and Blake rejoin the group, Yang noticed what Shadow had purchased, 'Great both of my little siblings are weapon nerds,' she thought as they went to Simple Wok for lunch while Blake got a bowl of tuna, Shadow got a plate with a huge steak.

Weiss, Ruby, and Yang look up from their ramen to look at Shadow's steak.

"Shadow are you sure you can eat all that?" Weiss asked.

He nods and starts to eat at the same time as Blake.

"Yang, ever since the White Fang had turned Luna into a Faunus her diet had been consisting of more meat."

"I know Rubes before she was vegetarian."

Weiss and Blake had heard their conversation, Weiss was confused as to why they would refer to Shadow as Luna and she made sure to ask Ruby when given the chance to talk with her alone.

When Blake had finished her tuna she notices Kurama walking by heading for the docks, she couldn't trust the Fox Faunus for some reason.

Soon all four girls look at Shadow gnawing on the steak bone making all of them facepalm at the odd behavior.

"I thought dad got her out of that habit," Ruby muttered to herself.

'Luna? Her?' Weiss thought.

Afterward, they have gone back to Beacon with Shadow still gnawing on the bone and Yang trying to take it away from him, the other three girls thinking he going to bite her the more she tried.

Weiss pulls Ruby out of the room by her wrist, "Ok why do you and Yang keep referring to Shadow as Luna, she not he? How is your twin a Faunus when you told me both of your parents are Human."

"Well, It Shadow place to tell you and Blake, not mine, not Yangs either," She told her.

"Dammit, Ruby! I'm your partner you're supposed to trust me with things like this, the moment he joins the team he is supposed to trust us with his secrets and not be another Blake, moody and antisocial!"

"Hey!" They heard from Blake from inside the room.

Ruby sigh and sit on the floor, Weiss soon joins her.

"Legally Shadow Rose doesn't really exist, she is Luna Rose, born five minutes after me and yes I said she, Shadow was born a girl, her semblance is Gender Shift, it allows her to change her gender at will."

"Why is he…I mean why she is a Faunus? And why Shadow Rose?"

Ruby then went on explaining that Luna was kidnapped by White Fang, the experiments they did on her which made her into a Faunus and how unsure they were on what else they have done to her that traumatize her so bad that she decided to use her semblance to be a male.

"I'm sorry that I had brought up bad memories for you Ruby," She apologize and give her a quick hug.

"It fine and I think Blake knows already."

When they got back inside the room, they see Blake holding Shadow down while Yang tries even harder to get the bone from her little sibling, they notice the bite marks that litter the blonde girl's hands.

"Ruby."

"Yes, Weiss?"

"Our team is weird."

"Agree but I like our weird team."

They decided to help them to get the bone from Shadow then they sat on the floor off their room until Yang spoke.

"Shadow, I think it time for you to go back to being Luna."

This got Blake and Weiss's attention.

"No."

"Why not?" Ruby asked.

"Is it because you're in heat?" Blake asked.

"Nope, not going to happen."

"Show Blake and me your semblance," Weiss said.

Soon Shadow got into an argument until he gives up and stood up as Shadow use his semblance to shift into his natural gender.

"Well, ladies I like you to meet my little sister Luna," Yang said as she stood up place her hands on her shoulders.

"Minus the Faunus features the two of you got the exact body type, small petite body, B cup perky breasts," Yang said making them blush.

Luna push her away and went to into the shower.

"That why your uncle requests a female uniform he probably thought we would have been able to get her to stop hiding behind her Shadow Rose persona," Weiss said.

"Won't be enough, we may have gotten Luna to be her actual self around us but she might choose to be Shadow when out of this room," Blake stated.

"Blake right Yang, she probably will stay as Shadow Rose, she needs to learn to face the world as herself, Dad has only been sheltering her and that didn't help her get over what has happened," Ruby says as she gets up and brings some clothes to Luna.

When Luna came out in what is to be Ruby's pajamas, the other three girls thought she was Ruby until they notice the wolf ears, Yang and Blake then stood up and left for their date night.

Soon after Weiss and Ruby left saying they had plans for the night so Luna just snuggle in her bed deciding to read one of her books which turns out to be smut.

There was a knock on the door and she went to open it, 'they probably forgot the key,' she opens the door only to see that it is Jaune Arc.

"Ruby do you want to go see a flick with me? I would ask my team but they're busy," He asked until he notices the ears.

"Shadow?"

"Yes and don't be so surprise as this is what I really look like when my semblance isn't active," She told him.

He let out a drawn 'oh'.

"So what this about a movie?" she asked.

"Oh right I got these tickets to this movie and since my team doesn't want to go see it, I was hoping your team will go with me,"

"Well Yang and Blake are out on a date, Ruby and Weiss went out to I don't know where but what is the movie?" She told him.

"It an anime movie," He replied.

"Sorry Jaune I'm not interested in going out tonight, maybe the redhead girl behind you likes to go," She said making him look back as she closed the door and Jaune then went to the movie with Pyrrha.

Luna went back to snuggling up on her bed reading her smut.

A couple of hours later Blake and Yang came back to a sight of Luna asleep with the erotic graphic novel in her hand hanging off the bed, they decided not to question it then go to bed.

Soon after Ruby and Weiss came in covered in dirt and bruises, they both went into the shower together.

'Training date good idea but we'll eventually have to spill about our relationship,' Weiss thought.

Later on, both girls were asleep in their beds.

I was out of idea for this chap