Contains: Enabler (Ruby x Yang), incest, handjob, facial.

It has been a few days since Team RWBY had lunch in Vale, and they have discussed on a mission they'd be taking. They agreed on a job that was easier than last time, such as clearing out a small sector of the forest of Grimm. Yang and Ruby agreed on the topic, Weiss didn't have an opinion, and Blake didn't care either.

So, when it is time for their team to sign up for a mission, Weiss and Blake head down to the main hall of Beacon to investigate on where to sign up for the mission. Yang thinks on the topic of joining them, and Ruby says she should. Yang smiles and thanks her sister for advice on the topic, and leaves the room, entirely forgetting the scroll that was sitting on the counter in between the teams' bunkbeds.

Once the door shut, Ruby sits back down in bed. Her futa cock was throbbing, hungry for her touch. She hadn't let herself have an orgasm in many days, trying to see if she can make it without it. But, today is the day she caves in. She takes off her outfit, tossing it all aside and lying in Blake's bed. She picks her bed because it was on the ground floor, and she didn't want to have to climb down to move around.

Lying down in her bed, she wraps her small hand around her thick length. Her cock is a large, girthy one, measuring in at 9 inches long, 6.25 inches in girth. She does her best to form a full grip around her girth, but she fails to by just an inch or an inch and a half. She doesn't care about it, though, just driven by the hunger to get off.

She begins to fantasize about many different things, such as a couple characters "doing it" from the anime episode she watched a few days back. She moans softly every few seconds from the pleasure of her fingers running up and down her needy shaft. She shuts her eyes tightly in the relief it gives her, the feeling of pleasure that masturbation gives. She gets close to her climax.

The door swings open, Yang laughing at one of her own puns. Without shutting the door, she pauses, gasping. "Oh, my goodness, sorry Rubes! Do you want me to come back later?" She grins, finding this kind of funny.

Yang has known about Ruby's condition for years, seeing as they lived together back at their home with Taiyang on Patch. So, Yang finds it kind of cute that her little sister is masturbating, and she had to help her sibling many times over when they were at home over breaks.

Ruby turns redder than her namesake. "E-Erm…" she mutters embarrassedly, looking down and trying to cup her oversized bulge. She hears Yang close the door, and her footsteps get louder as she approaches.

"Ruby, good lord, when was the last time you got off?" she asks, suddenly interested in her sister's masturbational habits.

"W-Well, I've been trying to hold off and see how long I go.." Ruby blushes as she says the statement. It sounds dumber when she says it over how it sounds in her head.

"Ruby, listen to me. Look me in the eyes," Yang tells her.

Ruby opens her eyes, looking at Yang attentively. Yang looks sympathetic for Ruby and gives her a big hug.

"Listen, Rubes, you've got to come frequently. You know what Dr. Morrison tells you every time you go for your physical. He always tells you to cum once a day. When you hold off like this, it could be physically straining," Yang holds Ruby in the hug.

"I know, sis, but I don't want to become addicted to it.." Ruby says in a frightened manner. Yang pulls away from the hug.

"Listen, if you become addicted to having orgasms, I'll be right here to help you with it. Do you hear me, Ruby?" Yang assures that Ruby's eyes are looking right at her, "I know that it's tough living with a penis, but I promise you, I will help you if you need it. Do you remember a couple days ago, when we were alone and having a pillow fight? You could have asked me for it." Yang kisses Ruby's cheek gently.

"Y-You're still willing to take care of me like that? Even in our dorm room?" Ruby blushes at the thought of her older sister sucking her cock while lying in the room they share with their team. While blushing at how absurd the thought is, she also returns to her state of erection.

"Even right now." Yang places a hand on Ruby's shaft, and Ruby goes wide-eyed. She has never felt such a wonderful feeling like her matured sister's bare palm on her throbbing, hot cock. Yang begins to slide her soft palm up and down the skin of Ruby's 'manhood', if you could call it that, and this incites a moan from Ruby's lips.

"Y-Yang, s-slow down.." she speaks, her voice trembling from the sudden sensation that is this experience. Yang smiles at her sister's words and proceeds to go faster just to spite her as a joke.

"Y-Yang!" Ruby exclaims. She tries to stop her, but Yang stops Ruby with a deep, passionate kiss. Ruby's silver eyes open widely as her sister searches through her mouth with her tongue. She tries to add to the kiss, but she eventually learns that her sister is the more experienced one, and she should let her do the work.

Once the kiss ends, when they needed more breath, both of the sisters moan loudly. Yang smiles from Ruby's shocked expression, and begins to stroke faster than earlier, hitting her top speed. Ruby begins to make cute high pitched noises before they all stop, and are replaced with, "I'm cumming, I'm cumming, I'm cumming."

Before she can know it, Yang's face and hair are coated in Ruby's thick, white seed. Ruby blushes hard from her orgasm, and Yang smiles softly. Internally, though, she's upset from all of the cum in her hair.

"I-I'm sorry for my… mess in your hair," Ruby apologizes, though it was quite weak due to her incredible orgasm.

"It's alright, Rubes. Just, let me know a little earlier than a few seconds before, 'kay? I'll swallow if I need to." She winks and wipes some of the seed off her face.

Ruby leans forward and licks her own jizz off of Yang's face. Yang smiles and collects some of Ruby's DNA off her face, and put her fingers forth for Ruby to suck on them. Ruby cleans her sister's fingers off, and they both smile. They both repeat until Yang's face is clean.

"I've got to get back to the group. So, I'm going to clean my hair out, then I'm going to catch up to them. Alright?" Yang smiles and kisses Ruby once more. Ruby enjoys the kiss while it lasts until it ends.

"Alright, sis. I'll see you soon!" She smiles as Yang disappears to the bathroom. She gets out of Blake's bed, grabs a bottle of air freshener, and sprays it around the room so it doesn't reek of jizz.

Yang returns from the bathroom, looking as good as ever. Ruby has her penis hidden away in her uniform, and she's sitting in front of the TV, watching her show.

"Let's not use any of our team members' beds for masturbation next time, alright, Ruby?" Yang laughs, pocketing her scroll. Ruby blushes at the statement and watches as Yang leaves the room.