3rd Person POV: 

Y/N was currently training outside of Beacon Academy, getting learning how to use his new Devil Arm Cerberus. He was getting pretty good at it as learns how to wield ice from this weapon. 

???: You seem like you're getting used to it. 

Y/N stops as he turns to see Vali walking towards him. 

Y/N: Vali, what are you doing here? 

Vali: I was about to heard to the library when I was you training with Cerberus. 

Y/N: Well, I have to be prepare when I face Sam again, or the other members of the Revenants. 

Vali: (cocks a brow) Revenants? 

Y/N: That's the name of Desperado's top elite mercenaries. My mentor and were members of that group, before we left them. 

Vali: Your mentor? 

Y/N: Frank Jaegar A.K.A. Grey Fox. He saved me and my mother, Summer during a mission she took from Ozpin.  

Vali: And who are the remaining members? 

Y/N: You've already heard of Jetstream Sam from Dean, and you've already met Blade Wolf. The ones you haven't met are Mistral, Khamsin, Monsoon, and Sundowner. 

Vali: They sound very tough. 

Y/N: They are... 

There was silence between those two until Y/N broke it. 

Y/N: Why'd you came to Beacon?

Vali: What does it matter?

Y/N: Everyone has a reason. Nikki told me she wanted to be a huntress to help others and defend them. Tyra's a similar thing, and both Dean and Arc want that while exploring the world. So, what about you?

Vali: (doesn't respond immediately) Power. I want to be a huntsman for more power.

Y/N: Why? To rule the world? 

Vali: Don't be ridiculous. Have you ever lost someone in your life? Someone that was close to you, but they were killed because you didn't have enough power?

Y/N: (looks down) Actually, I have. She was someone important to me. What about you? 

Vali: I lost two of my best friends. They were killed by a powerful demon, and I was too weak to save them. 

Y/N: I'm sorry to hear that. 

Vali: It's fine. I should be the one apologizing to you for being so cold. I guess I inherited that from my uncle. 

Y/N: Hey, it's no big deal. (offers a handshake) How about we start anew and get stronger together, as friends. 

Vali looks at the hand for a moment before he did a small smile as he took it. 

Vali: Very well then. 

(time-skip)

The scene starts Y/N and his sisters in their room while Weiss and Blake were out.

Ruby: Finally we get to be alone. Just the three of us. 

Y/N: Seriously? That's what you're relax about?

Yang: Well a bonus is being with you. Why you don't want to be with us? 

Y/N: That's not what I meant. Of course I like hanging out with you.

Ruby: (smiles) See you never hate being with us.

Y/N: Yeah.

Yang: And since we are alone, we need to talk now.

Ruby and Yang look at Y/N seriously.

Ruby: And I'm going to lock the door.

Ruby gets up and locks the door so they aren't disturbed.

Y/N: Uh, is that necessary?

Yang: Yes it is. Cause we are discussing this now.

Ruby: And we don't want to be interrupted.

Y/N: Okay, what is it?

Ruby sits down with Yang on the couch and they both look at Y/N

Ruby: Is there something wrong with you Y/N?

Y/N: With me? I don't know what you're talking about.

Yang: Don't lie to us. You've been distant lately and given your outburst at Jaune last night something is bothering you. 

Y/N: I... I don't want to talk about it.

Ruby: (concern) Y/N? Does it have to do with what Jaune said about-

Y/N: Jaune has nothing to do with this!

Yang: Y/N!!

Y/N: WHAT DO YOU WANT FROM ME?!

Y/N's right eye glows blood red. Ruby and Yang back up in complete fear. Y/N realize about his outburst as his right eye stopped glowing.

Y/N: I... I'm sorry... I should leave.

Y/N was about to heard to the door. But Yang grabs him and pulls him back to the chair he's sitting on. Y/N was cut off guard and surprised at the same time, but Yang was also tearing up at the same time

Yang: (teary) What is wrong with you?! Are we your enemies now?!

Y/N: No, I-

Ruby: (cries) WE JUST WANT TO HELP YOU!!!

Yang: (cries) But you think we don't care about you! I thought you trusted us! You think just cause we aren't the same blood means you don't mean anything to us?!

Y/N: (looks down in shame) You have every right to be mad at me. I was so focus on being a solo act, I never realize that it effect you and the others. So go ahead, do whatever you two seem fit and hate me. I deserve it anyway.

But what happens next shocks Y/N. He than feels lips on his lips.

And it was none other than Yang who is kissing him as she wraps her arms around his neck and deepens the kiss while sitting on his lap. 

Y/N felt his stress being relived by his sister as he melt into the kiss back while wrapping his arms around her waist.

Yang moans heavenly in the kiss as her tongue demands entrance into his mouth. Y/N allowed it as her tongue went inside his mouth. Yang savors the taste of his mouth and starts french kissing him as Y/N moans inside the kiss.

Yang then pulls away and looks at him while blushing.

Y/N: (blush) Yang...

Yang: (smiles) You're our solo act idiot. And we wouldn't want it any other way.

Than suddenly Ruby kisses him as well. Y/N was surprised before he kissed back and hugged Ruby. Ruby cupped his face with warmth and care as she kisses him with love and passion.

Y/N felt more stress being relived by Ruby. Ruby wraps her right arm around his neck while using her left hand to cupped his face as she moans with love in the kiss.

Y/N: (breaks the kiss) Ruby...

Ruby: (softly) It's okay. But you should know we are here for you bozo.

Y/N: You're so sweet and kind like our mom.

Ruby: (smiles) Well I am her daughter and I learn from the best.

Y/N: Hey girls, can ask you something?

Yang: (smiles) Yeah sure.

Ruby: (smiles) What is it?

Y/N: (blush) I know it's too much to ask, but... do you want to be my girlfriends and have sex?

The girls were surprised by this.

Y/N: (blush) I mean, I have feelings for you two, even though we're siblings not by blood. If you don't want to, I understand.

Ruby: (blush) Actually to be honest with you there's something we need to tell you too

Y/N: Huh?

Ruby and Yang: (blushes) We are in love with you.

Y/N: Really?

Ruby: (blushes) It's true. We were scared you wouldn't except them.

Yang: (blushes) More importantly, Ruby, that you wouldn't.

Y/N: Girls...

Y/N puts his left hand on Ruby's cheek while he the same to Yang with his right.

Y/N: I love you, my little and big sisters.

Ruby: (smiles) Really?

Yang: (smiles) You do?

Y/N: (smile) Yes.

Ruby squeals in happiness and hugs him tightly. Y/N smiles as he hugs back.

Yang: (smiles) I knew you would accept our feelings. But we have one more question for you.

Y/N: Yes?

Ruby:(curious) Why were you really at Professor Goodwitch's house the other night?

Y/N: (blush) Eh... Please don't get mad, but, I had sex with Glynda...

Ruby and Yang stare at him in silence.

Ruby: What?

Yang: And why?

Y/N: (waves his hands in defense) That wasn't my fault, I swear! Glynda wanted this because she also has feelings for me too! Plus, she told that there other girls who want me.

There was silence for a few minutes before suddenly.

Yang: (pouts) How dare she! She took your virginity first! No fair!

Y/N: (confused) Huh?

Yang: (pout) Why did she do that?!

Ruby: Y/N remember what we said that we get to edgy with you around girls?

Y/N: Yeah? Wait...

Ruby: We are not going to be like that anymore.

Y/N: (sweatdrop) Oh boy.

Yang: No no. What that means we will trust you more.

Y/N: (confused) What?

Ruby: The truth is we can't keep doing that to you cause it will be like we want to keep you to ourselves. And you wouldn't trust us.

Yang: Exactly.

Y/N: So, are you gonna punish me or...

Ruby: No, we're not.

Y/N: Okay, now I'm really confused.

Yang: (smiles) What she is trying to say we trust you with other girls now, dummy.

Y/N: Oh...

Ruby: (smiles) Exactly. Cause we know that Natasha, Blake, and Weiss have feelings about you.

Y/N: Okay. So, what happens now?

Yang sits on his lap and has a seductive look on her face.

Yang: (seductively) Well I believe you asked us for something~.

Y/N: (sweatdrop) Oh boy, we're doing this now, are we?

Ruby: (seductively) Well you asked us and to be honest...

Ruby traces his chest very slowly as Y/N starts blushing by her touch.

Yang: (seductively) We want you very badly.

(Warning: Lemon scene! If you don't want to see this or if you're under 18, skip it till you reached the end)

Yang starts to kiss his neck and nibbles on it. Y/N moans and gasps as the girls start taking his clothes off. Yang licks her lips at seeing Y/N's strong built body.

Yang: (seductively) So strong and sexy~.

Ruby: (seductively) I agree~.

Ruby and Yang get in front of him and starts doing a sexy duo dance while stripping each other's clothes off very slowly and seductively, showing off there sexy bodies. 

Y/N: (blush) Oh crap! I can understand Yang since she's flirty, but Ruby, I never thought you would follow her footsteps.

Ruby: (seductively) We all have different sides to us~. And only you can see this side of me~. Do you love it~?

Y/N: (kissed her lips) Doesn't that answer your question~?

Ruby: (seductively) Mmm~. That works~. So who do you want first~?

Y/N: I'm letting you girls decide.

Yang: (seductively) I'll go second~. Ruby, you may go first~.

Ruby: (seductively) Alright than~.

Ruby walks forward and sits on Y/N's lap while Yang sits on a chair and watches. Ruby kissed Y/N on the lips as the two started making out with each other.

Ruby kisses with love and wraps her arms around his neck and moans heavenly in the kiss. Y/N moans as he reached his and touched his sister's butt.

Ruby moans very sexy in the kiss in reaction to that. Y/N starts to grop her butt, making her moan as Ruby starts grinding his cock with her pussy. Ruby breaks the kiss.

Ruby: (seductively) You're a great kisser big bro~. And your touch is lovely~.

Y/N: Same with you~.

Y/N starts kissing her neck. 

Ruby: (moan) Ahhh~! Mmm~! Your mouth is so lovely~!

Ruby grinds his cock more, as it starts hardening. Ruby than unclips her bra to reveal her breasts to Y/N. Ruby's breasts were a little bit bigger than Weiss's as he starts blushing.

Ruby: (blush) Do you like them~? I'm sorry if they aren't good enough~.

Y/N: Ruby, I don't care how big or small you are.

Y/N starts to grop her breasts with his hands. Ruby moans with love and pleasure in her voice.

Ruby: (moan) Ohhh~! Yeah~!

Y/N continues to grop her right breast while he starts sucking her left breast. Ruby moans louder from Y/N's movements and grinds his cock even more. Y/N while sucking her breasts as his cock got fully hardened and poke his sister's butt.

Ruby: (seductively) Looks like something else excited~.

Y/N blushes a little more.

Ruby: (seductively) Let me help with that~.

Ruby goes down to his pants and takes it and his boxers off, showing his big cock.

Ruby: Oh my~!

Yang: (smirk) Wow Ruby, looks like you've got to a big friend to play with~.

Ruby: (surprised) No kidding~. 

Ruby starts to kiss and lick his cock which made Y/N starts moaning. Ruby strokes his cock while also massaging his ball sack with love. 

Y/N moans and gasps in pleasure. Ruby than puts his cock into her mouth and starts giving him a blowjob with love. 

Y/N: (moans) Oh~! Ruby~! Aw~!

Ruby stops and puts his cock between her breasts and gives him breast blowjob with passion. Y/N moans a little bit louder. Ruby licks the top when it comes out of her breasts with her tongue and does it fast and lovingly. 

Y/N: (moan) Ah~! Ruby~! I- (moan)

Ruby goes faster to get him to release. 

Y/N: (moan) Wait~! I'm gonna cum if you do that~! (moan)

Ruby: (seductively) Cum my mouth~. I can take it~.

Y/N then releases his load inside Ruby's mouth. Ruby swallows it whole and moans in delight

Ruby: (seductively) Delicious~. And now~.

Ruby sits next to him and opens her legs, showing her wet pussy

Ruby :(seductively) Your turn~. Come eat my pussy out~.

Y/N starts licking his tongue at her pussy.

Ruby: (moan) Ahhh~! Ahhh~! Yeah~! Ohh Yeaah~! Mmm~!

He then insist his tongue inside her pussy. Ruby moans loudly at this.

Ruby: (moan) Oh Oum~!! Oh my God your tongue feels so good~!! Lick my pussy up~! Eat it like you love it~! It's all yours~!

Y/N continues licking and sucking her pussy. Ruby moans and gasps in pure love and pleasure as she enjoys Y/N eating her out. Ruby felt like she was reaching her limit as she wraps her legs around his his head, pushing him deeper.

Ruby: (moan) I'm  going to cum~! I'm going to cum~! You're going to make me cum~!! You want my cum big bro~?!

Y/N: (moan muffed) Mmhp~!

Ruby: (moan) Here it comes~!! I'M CUMMING~!!!

Ruby then release her load on Y/N's face as she let's go of his head.

Y/N: (takes a breath) That did not happen last time I had sex.

Ruby: (seductively) I guess you own that to Professor Goodwitch when you see her again~. She will love your skill and tongue no doubt. 

Y/N: I'll keep that in mind.

Ruby: (seductively) Ready for the main course~?

Y/N: Are you sure about this?

Ruby: (seductively) I'm on protection~. Besides, I want to see why Professor Goodwitch let you fuck her~.

Ruby gestures him with her finger. 

Ruby: (seductively) Come and fuck me big bro~.

Y/N then inserted his cock inside of Ruby's pussy as Ruby moans in delight.

Ruby: (moans) Ahhh!

Y/N: Are you okay?

Ruby: (moan) I'm okay~. You're very big and warm~.

Y/N starts thrusting slowly inside of Ruby. Ruby moans in pure pleasure and love

Ruby: (moan) Mmm~! Ahhh~! Your cock feels so good and warm~!!

Y/N: (moan) Ahh~! You're tight as well~!

Ruby: (moan) Go faster~!! Fuck me hard~!!

Y/N does what she said and thrust faster. Ruby moans loudly and her face is full of pleasure and love.

Ruby: (moan) Ohhh~!! Yeah~! Yes yes yes~!! God you're so amazing~!!

Y/N then started thrusting harder as well as Ruby moans loudly.

Y/N: Ruby~! I-

He was cut off when Ruby turns over, as she was on top of Y/N.

Ruby: (moan) Let me make you feel good~!

Ruby starts thrusting her hips up and down to increase the pleasure.

Y/N: (moan) Aw~! Oh god~!

Ruby:(moan) Yeah~!! You feeling good big bro~!! You like it~?!

Y/N: (moans) I love it~!

Ruby: (moans) You make me feel so good~!!

Ruby goes faster while tracing his body seductively. Y/N moans loudly, then things start going crazy when Ruby uses her Semblance.

Y/N: (moan) W-Wait, you're going too fast!

Ruby: (moan) Do you want me to slow down~?

Y/N: (moan) I want to, but it feels so good~!

Ruby: (moan) If you like it than I'll keep going ~!!

Ruby amps her speed up as she was thrusting insane speed, slamming down on his cock as his moans were getting louder. 

Y/N: Ruby~!!

Ruby: (moans) I'm going to cum too~!! Let's cum together~!!!

Ruby then slams down hard, making him release his load inside of her. Ruby moans loudly with pleasure and passes out on the couch, Y/N however was panting.

Yang: (seductively) Wow you're incredible~.

Y/N: (panting) Tell that to Ruby. She's more incredible than me.

Yang: (seductively) Oh, but you didn't do it with me yet~.

Yang gets and walks in front of him and does a very sexy dance, showing off her sexy body. 

Y/N: (blush) My god Yang, you're hot~.

Yang: (seductively) Yeah~. And let me show you that I'm better than Ruby~.

But Y/N grabs her as he pins her against the wall and holds her with her arms around his neck and her legs around his waist. Yang gasps in surprise and grinns seductively.

Yang: (seductively) Oh I really turned you on~ Ravage me little bro~

Y/N starts groping her left breast with his hand while sucking her right breast with his mouth. Yang moans loudly

Yang: (moan) Ohhh Yeah~!! Oh Yeah~!! Suck on them~!! Mmm~!! There all yours~!! Ohhh~!!

He continues to suck on them while his instinct made him insert his cock inside Yang's pussy. Yang moans extremely loudly

Yang: (moan) Ohhh my Oum~!! You're so big~!! I love it~!!

Y/N: And you're so tight~!

He starts thrusting up and down inside of Yang.

Yang: (moan) Ohhh Yeah~!! Yeah~!! Yeah~!! Fuck me hard~!! I need it~!!

His thrusts went harder and faster. Yang moans in pure pleasure and love while her facial expression shows lust in her eyes and full of enjoyment.

Y/N's cock started twitching, before he could say anything, Yang pushed her brother as his back was on the bed.

Yang: (moan) Let me give you a good time~.

Yang turns around goes into the cowgirl position and inserts his cock again.

Y/N: (moan) Yang~!

Yang moves her hips around to have his cock move in deeper.

Yang: (moan) Do you like it~?!

Y/N: (moan) I love it~! Ah~! Oh~!

Yang than bounces up and down fast and hard.

Yang: (moan) Better than Ruby huh~?!

Y/N moans in pleasure as Yang pushed his head on her breasts.

Yang: (moan) Ravage my breasts~!! Touch them~!! Suck on them~!!

Y/N then starts sucking her breasts while made Yang moan as she increased her movement with her hips. 

Yang: (moan) Ahhh~!! Yeah~!! Gosh I love you so much~!! You make me feel so warm inside and good~!!!

Y/N: (muffed moan) Mmm~!!

Yang then gave her little brother a kiss on the lips, Y/N then kiss back. Yang moans heavenly and breaks the kiss

Yang: (moan) I love you so much~ I belong to you and you alone~!! I'm all yours little bro~

Y/N: (moan) I love you too, big sis~! Ah~! I'm gonna cum~!!

Yang: (moan) Me too~!! Let's cum together~!!

Yang then did a big slam hard on his cock, making him release his load and moan loudly. Yang moans in delight and at his warm cum.

Yang: (moan) Delightful and now~.

Yang lays next to him and opens her legs wide open, showing her wet pussy.

Yang: (seductively) I want you eat my pussy out just like you did to Ruby~. I wanna see if she was right~.

Y/N starts licking her pussy with his tongue. Yang moans immediately at his lovely tongue.

Yang: (moan) Ohhh Oum~!! Ohhh~!!

Y/N then sucks her pussy with his mouth as Yang moans loudly in response.

Yang: (moan) Ohhh yes yes yes yes~!! Oh my Oum Ruby was right~!! You know how to eat a pussy out~!! Oh yeah right there~!! Keep using your tongue right there~!! Ahhhh~!!

Y/N continues licking and sucking her pussy with his mouth and tongue. Yang moans in pure pleasure and love while wrapping her legs around his head to hold him there.

Yang: (moan) How do you know how to eat a pussy so well~? I'm cumming~!!

Yang moans loudly then cum inside of her brother's mouth. Yang pants in exhaustion as Y/N lays beside her and she wraps her arms around him and snuggles into him.

(Lemon ended)

Yang: (panting) That was amazing. You're incredible~.

Y/N: (panting) Yeah, well you're incredible too.

Yang giggles and kisses Y/N with love as he kissed her back. Yang moans with love and breaks the kiss

Yang: (smiles) I love you so muc.

Y/N: I love you too.

Than on Y/N's right side Ruby lays besides him and snuggles into him as well

Ruby: (smiles) Me too. Don't forget me.

Y/N: Yeah, I love you Ruby.

Ruby then falls asleep.

Yang:(smiles) Let's get some sleep okay.

Y/N nodded as he and Yang fell asleep.

(the next morning) 

Y/N's POV: 

We all were sitting down and eating breakfast. Pyrrha agreed to help me train Jaune and was happy to have him back.

Glynda: (over the intercom) Y/N Rose, report to Professor Ozpin's office immediately, again Y/N Rose to Professor Ozpin's office!

Y/N: Well that sounded important. Should I wait?

Blake: No, you should head there now.

Y/N: Alright, (stands up) I'll see you all later.

I made it to Professor Ozpin's office and saw him talking to a man that I've never seen before.

Y/N: (to Ozpin) You wanted to see me sir?

Ozpin said nothing and the mysterious man turned to look at me. He was around his early forties with black hair, a beard, and he has silver eyes like Ruby. 

Mysterious man: (smiles) Good to see you..... my son.

Chapter 18 ended.