Fluttershy's adopted brother Angel glared at her. Her parents had asked if she would let her pale, short, skinny, slightly fuzzy 18 year old brother stay at her house while they went to a convention of some sort. He had constantly bullied her since he was brought from the home as a child. She tried to be supportive and kind over the years, but the constant butt slaps and nipple tweaks had pushed the girl over the edge. She was a grown woman and she didn't need some little college freshman pushing her around. It was time to put her foot down.
"Hey Fluttercunt!" shouted Angel as he walked through her bedroom door.
It suddenly slammed behind him. There was a sharp shove knocking him unbalanced, and he found himself gagged and bound. He was spun around then shoved onto Fluttershy's bed. He looked up and saw his stepsister. It took him a moment to recognize the look on her face. She was mad. Fluttershy was never mad. Angel felt a cold shiver of terror.
Angel’s eyes drifted down. Mother of god, what did she have attached to her waist?!
“I am your big sister, Angel! And you will treat me with the respect I deserve!” huffed the angry girl.
Fluttershy flipped Angel over onto his stomach, butt in the air. With his hand tied behind his back he had very little ability to struggle. His muffled cries of concern were ignored by the older, stronger girl. She took off his shoes, undid his pants and belt, and slipped them off. Angel was motionless with shock, wearing nothing but his white briefs and t-shirt, butt up in the air in front of his sister.
“I tried to be nice. I triiiied to be understanding. But you just walked all over my feelings Angel! As your big sister, I’m going to have to take responsibility and show you how our relationship is gonna work from now on. Understand?”
Angel nodded, his eyes wide with terror. Satisfied he understood, Fluttershy gave a quick sharp slap on his ass. She smiled at the confused tears in his eyes.
“I wanted a NICE little brother. And you are going to comply Angel.”
She lovingly rubbed his ass where she struck him. Then she ran her hand down, cupping his butt cheek. Then her hand went between his legs, eliciting a muffled gasp from the younger boy. She stroked the cotton fabric, just a light massage on his crotch. She smiled as she felt him respond.
“Oh, so NOW you finally decide to try to show your big sister how you really feel,” she smirked as she hooked her fingers underneath the waistband of his white briefs.
Fluttershy pulled Angel’s undies off and threw them in the general direction of the rest of his clothes. She flipped him onto his back with his legs off the bed. Then she leaned onto the bed with her elbows on the bed, knees on the ground, head in one hand, his cock in the other. She smiled sadistically as she saw him squirm, enjoying the warmth in her hand. She stroked him, slowly and roughly, using her thumb to spread the growing trickle of precum around his shaft.
“I have not enjoyed your behavior Angel. It’s very rude to slap a girl’s ass or pinch her nipples,” Fluttershy paused, “when she doesn’t ask for it. There’s a time and a place, and I’m going to teach you that.”
The quiet yellow girl continued to stroke his cock up and down. She lifted her head up and spit on it, the lubrication still not up to her standards. She saw his eyes grow hopeful with her face so close to his cock. She laughed then squeezed his cock nearly as tight as she could.
“Angel, this is punishment. You’ve been very mean to me. I’m going to teach you to be the kind of little brother I want.”
Smiling, she gave one quick lick then sucks on the head of his now purple cock. She pulled it out of her mouth with a pop.
“Girls won’t like you if you don’t keep yourself clean,” she said sticking her tongue out with a face, “you better make sure to keep your penis nice and clean from now on.”
Angel nods foggily. Satisfied, Fluttershy sped up her stroking. With her other hand she reached up under her sweater and began to massage her tits.
“You need to be gentle with girls at first. We’re nice and soft,” Fluttershy cooed, then leaned forward as she pressed her breasts up against his cock. See?”
She ran her free hand all around his sides and chest and she stroked his cock faster and faster, her still clothed breasts bounced against his balls. With a sudden jerk, Fluttershy felt him about to come. Smiling evilly, she pointed his jumping cock up towards his face. Thick ropes of semen sprayed across his chest, with one bead landing across his face. With a look of satisfaction, she stood up and pulled her sweater off over her head, exposing her large, bouncing breasts.
Fluttershy leaned forward, placing her topless body on her still shirted little brother’s. She lovingly licked the string of cum off his face before moving the gag to give him a quick kiss, intentionally forcing him to taste it. Sliding her tits down his upper body, she enjoyed the sensation of his ragged breathing. Fluttershy flipped him over on to his stomach, then placed his butt back up into the air.
“Are you learning Angel? Will you be nicer to your big sister from now on?”
Angel appeared to nod and mumble beneath the gag. She took it off. Fluttershy then climbed over behind him on the bed. She leaned forward, grabbed his slimy semi soft cock with one hand, and stuck her tongue against his butthole. Angel gasped as she continued to flick and jab her tongue against his tight butthole, cock hardened by the milking and anal stimulation. After a final flick of her tongue, she rubbed all the precum, saliva, and cum all over Angel’s tight butthole.
She placed the head of her small strap-on against his well lubed butt and used her hand to coat the shaft with the slimy mixture. Then she started to push. The head slipped in, making Angel quiver. She ran her other hand along his back underneath his shirt, massaging him up and down as she continued to press further into his tight butthole. Finally, Fluttershy got the entire plastic penis into her little brother. He whimpered adorably under her touch as she pulled it out then thrust it back in. Satisfied that he was prepared and it wouldn’t hurt him, she quickened her pace, pounding her quivering little brother’s ass.
“Ahh.. ahh.. Fluttershy… I’m soooorry,” he squeaked out in between her thrusts, light tears forming in his eyes.
Once again, she felt him quiver. She thrust fully into him, then reached down below to stroke his bouncing cock. With an adorable cry, Angel came all over Fluttershy’s bed. After the spurts died down, Fluttershy pumped her plastic penis into his butt one more slow time, just to make sure. Then she scooted back and it slid out.
She rolled him back over and stared into his glossed over eyes as he panted. She cradled him in her arms as best she could, him being an 18 year old college freshman after all, as she ran her fingers through his hair, planting tiny butterfly kisses across his face.
“You did very well Angel, momma’s so proud,” as she cuddled up against him.
The next morning, Fluttershy got up a little late. For some reason her alarm hadn’t gone off, which was alarming considering it was her turn to host the pancake breakfast for the rest of the girls. She rushed downstairs when she noticed the smell of pancakes. There, in the nook were all her friends, with Angel serving them pancakes.
“There you are Fluttershy! Your brother has been so sweet this morning,” smiled Twilight. “Maybe you could do whatever you did to straighten him out to Spike!” Spike being Twilight's also fully grown, 18 year old stepbrother.
Fluttershy and her brother Angel blushed deep crimson. Then Fluttershy flashed a small, almost plotting smile.
“Maybe I could tell how you could do it instead…”
