Sisterly Love

"Your choice, Ruby.” You assured her, sitting down after grabbing a soda from the fridge. “I need a break. You girls are going to be the **** of me some day.”

“Sorry.” Pyrrha apologized. “But I just love it when you use me.”

“We all do.” Nora added, as the others nodded.

“It’s so hard to choose!” Ruby looked from Yang, to Weiss, to Neo, to Nora. “I wish I could play with all of you at once.”

“You can only choose one for now.” You remind the girl.

“Ugh... don’t hate me Weiss!” Ruby cried out. “I’m going with Yang!”

“What?!” Yang yelped.

“Shush.” You told her. “This is Ruby’s decision.

“I don't mind!" Weiss shook her head quickly. “Have fun with Yang.”

“So what do I do?” Ruby asked, as she flicked the rubber strap-on she was wearing again.

“The game’s simple.” You explain. “Yang’s going to stay with her hands on the wall just like she is. Everyone else, you can get down and rest. It might be a bit before your turn. Booty Inspection is over.”

Nora and Neo sighed as they sat down on the nearest bid, while Weiss looked relieved. It wasn’t the most comfortable position and while she was fine with Jaune using her butt...Ruby? That was a different story. Especially with a hard piece of rubber. It probably wouldn’t have felt as good. Ruby’s tongue was fine. After Jaune’s suggestion, the two of them did it occasionally to increase their teamwork.

“You’re going to lube up that dildo and stick it deep inside Yang’s butt,” You continued. “Then you do what I did. You thrust in and out and try to make Yang feel good.”

“If it’s a game, how do I win?” Ruby asked.

“Umm...” You had to think fast. “It’s not really a point game. Your job is to make Yang feel good and you get to be dominant.”

“Dominant?” Ruby tilted her head. You set her up to be gullible, but she still shouldn’t learn certain words yet. Her innocence is what made her adorable.

“Sort of like how Yang teases you,” You explained, making everything up on the spot. “You’re in charge so enjoy it. Trust me, you’ll enjoy yourself.”

“Okay, let me get greased up!” Ruby took out the lube and began to rub it all over her strap-on. Watching her give herself a ‘hand job’ awkwardly was precious. You might recharge faster than you thought at first.

“Er... Ruby?” Yang was sweating slightly. “Maybe you SHOULD choose Weiss?”

“Nope!” Ruby shook her head as she positioned herself behind Yang. “I’m in charge now, Yang.”

“But-…!” Yang tried to protest.

“Yang,” You cut her off. “No talking anymore unless I tell you to.”

Yang closed her mouth and whimpered.

“Hehe, go Ruby!” Nora cheered and Neo silent imitated her.

“Good luck, Yang.” Pyrrha wished.

“Go ahead Ruby,” You encouraged, taking the bottle from her. “This will be a great show.”

“I’ll do my best.”

Ruby then pushed her lubricated plastic toy into her older sister’s ass.

“MMMMM!” Yang bent forward, her teeth clenched tightly.

Clutching Yang around the waist, Ruby awkwardly thrusted her hips. This was her first time doing anything sexual. You hadn’t really used her for sex like the others, more enjoying teasing her. Also, as a girl, she probably never imagined being one to peg someone, let alone her sister. Ruby was just imitating what you did.

She needed some guidance.

“Yang, help her out.” You tell her. “Tell her what to do. That’s what a big sister should do.”

“I... ah... don’t worry about going faster yet,” Yang grunted. “Work on aiming first then move.... mmmm, shift your hips... ah... that’s it!” A yelp escaped her.

“Oh, this is fun!” Ruby kept trying to shift her position to get a better angle.

“I like to lean over and grab her breasts,” You suggest with a grin. “It makes her feel good too, so it's a win-win.

Ruby leaned forward and reached around, placing a hand on Yang’s tit, squeezing roughly as she continued to slam her ‘dick’ into Yang’s ass. Yang let out another moan as she was pleasured. You were really enjoying this and not the only one. Neo was opening rubbing between her legs while Nora was grabbing her breast. Weiss’ face was red as Pyrrha’s legs pushed together and rubbed each other.

Damn, this was hot. Ruby was going to do this more often for you.

“Yang’s chest was always really soft.” Ruby giggled, recalling the times Yang hugged her.

“Go faster!” You shout as she started getting the hang of it. “Really let her have it.”

“I will!” Ruby promised as she began to thrust faster, slamming her crotch against Yang’s ass.

That was when everyone got a surprise.

Ruby’s Semblance was speed. As she focused, she began to move faster and faster. Her body was a blur as it moved back and forth. She was fucking at speeds no normal person could do. It was easily two to three thrusts a second. No normal person could stand it. Not even Yang.

“AHHHHHHHHHHHHH!”

Yang’s eyes rolled into her head as she began to foam at the mouth. Her legs shook and collapsed as her arms slide down the wall. The pleasure was overwhelming everything else. Falling to the ground with no strength left, no noise escaped Yang’s lips after the scream besides some jumbled gurgles. Ruby held her sister up for a moment as one hand was still on her breast, but then stumbled forward and collapsed on her.

Weiss and Pyrrha jumped up to help, but you found yourself clutched over and laughing along with Nora and Neo.