Time had passed since the whole murder mystery birthday fiasco on the Mirage Express. But despite all of that, everyone else had fun. And Tails even played like the actual Sherlock Holmes and with that cute quokka as his Watson. Despite his social awkwardness and... fondness for finding useful stuff in trash, he was a smart guy and a cool person.
That gave him an idea. He did hear news that after that job, the quokka named Barry resigned after the craziness that happened. And hell, he couldn't blame him. He would've done the same in his shoes. That's where the idea came in. The two tailed fox is swamped with some projects and he's all kinds of stressed out.
He needed an assistant. Someone who knows what to do, and Barry was a smart guy, he could handle some gadgets and testing. He also recalled that they bonded so well and were deemed the 'normal' ones in the group, that they exchanged numbers.
Well, now was the time to make that useful! Tails brought out a napkin that Barry used to write his number and dialed it down, waiting for him to pick up after a couple of rings. Finally, he heard the male's voice and smiles.
 “Hey, Barry, it’s Tails.” He greeted. “I was wondering if I could ask you something?”
“Sure, what’s up?” Barry replied.
“I’ve been thinking about it ever since the whole murder mystery fiasco, and I was wondering… Did you want to become my assistant?”
He heard Barry gasp on the other line. “Me? As your assistant? Of course!”
Him, becoming an assistant to Miles Tails Prower?! How could he possibly refuse!? Tails smiled on the other hand, hearing his response. He sounded very excited at the prospect of working alongside one of his idols.
"Great! I'll see you later then?" Tails says to him, already having many thoughts on what to do with him.
"Yes, yes! Of course! I won't let you down, Mr. Prower sir!" Barry says in his excitement.
"It's okay. Just call me Tails like usual, okay? I'll get some stuff ready until you get here. See ya soon!" And with that, the two tailed fox hung up and silently raised a fist in the air in silent victory. Now... to get things ready.
A few hours later, Tails heard the doorbell ring. He peered through the front door’s peephole to confirm that… Yep! Barry was here!
Upon opening the door, the two Mobians shook hands. “It’s so good to see you again, Tails!” Barry greeted.
“Likewise!” Tails replied. “Please, come in.”
Barry entered Tails’ home. “Wow, I never expected it to be this clean.” Said Barry as he looked around.
Tails chuckled at this. “Yeah, I try to keep it clean most days.” He explained. “Anyway, are you ready for your first task?”
Barry nodded excitedly. “I sure am! What’s first?”
The two tailed fox began to explain. "Well, you see... I needed someone to give me some ideas, test some gadgets. You know, the standard. And I needed your help. There's only so much I can do by myself after all."
That seemed to make sense. As smart and a prodigy Tails is, there's only so much he can really do before he's overwhelmed or exhausted. Barry nodded and thought about it. "I see... Sure! I can help you Tails! Just tell me what you need and I'll do it!" The quokka smiled.
God, his smile was just so cute...~ Tails was going to enjoy this. "Appreicate the enthusiasm, Barry. The first one isn't so hard. Let me show you further inside." He outstretched his hand for the other mobian to take.
Barry took Tails’ hand before he lead him to a sealed door at the back of the house. After Tails input a code into a keypad next to the door, it opened to reveal quite a large room filled with all sorts of gizmos, gadgets, and other stuff Barry couldn’t quite make out.
“What is this place?” Asked Barry.
“This is where I keep most of my inventions.” Tails explained before pointing to the far back of the room. “The testing area is back there. Just don’t touch anything else; it’s all experimental.”
Barry nodded before the two walked to the aforementioned area. On the way there, Barry fought every instinct to closely examine each and every object in the room. He didn’t want to make Tails mad, after all.
Eventually, they reached a table that a few objects on it: A toolbox, a blueprint, and most curious of all, an unfinished remote with a single red button on it. “What’s that?” Asked Barry.
"Oh, this? One of the gadgets I'm making. It's still in its experimental phase, so this is the perfect time for a test run!" The fox explained as he picked up the remote and moved the toolbox aside. "I just need you to stand... right here." He moves the quokka to the spot and Tails steps back.
"Okay... so, I just... stand here? That's it? What does it even do, Tails?" Barry asked, his brow furrowed in confusion.
"Oh, you'll find out soon. Don't worry." The genius replied, and suddenly, Barry felt a little uneasy about this. But Tails would never hurt him! He wasn't like Eggman! He'd be fine... right? Right. He has nothing to worry about.
"And without further ado..." Tails then pressed the button on his remote and his little experiment came to life.
A few lights on the remote came on as the tip of it started to glow a bright red. “I-Is that supposed to happen??” Barry panicked.
“It’ll be fine, Barry.” Tails reassured. “Just relax~”
…Did Barry hear him right? Did Tails tell him to relax in such a provocative manner? Barry didn’t have time to think as a red beam suddenly shot out of the remote and straight at him!
Barry screamed and closed his eyes as his mind started racing. What did Tails do to him?? Was it even the real Tails? However, as soon as it started, it all went silent.
“Wow! It worked!” He heard Tails say excitedly. What worked? Does he dare open his eyes and find out? Having no other choice, that’s what he did.
When he opened his eyes... nothing seemed to be different. There was Tails, proud that his experiment worked. But, what exactly did he do and why was he so happy? And what was that sensual tone earlier? Barry had so many questions.
Although... now that he thought about it. When that beam hit him, he felt a bit... weird. He can't quite explain it. "Well? Any difference, Barry? How do you feel? Not hurt, I hope." Tails said. Okay, it was still the real Tails and not some evil robot alien clone or something.
"I don't know... what did you do to me and what's happening...?" Barry said, trying to process just what exactly is going on.
“Why don’t you take a look down?” Tails suggested. A look down? Why would he ask him that?

Barry looked down and gasped. His previously-masculine figure has completely changed to something more, erm… Feminine. Wider hips, a larger ass, the works! “What did you do to me?!” Barry panicked.
“Like I said before, just relax~” Tails said in that same tone before beam was fired. Completely oblivious to Barry’s conundrum. “Take a deep breath and tell me how you feel.”
Still shaking, Barry slowly breathed in and out before he gave his reply. “I feel… Good~” He replied. How else was he supposed to feel? What did that remote do to him? In fact, why was he so panicked in the first place? Ah well, he figured he’d ask questions later.
He felt relaxed, calm, and… Maybe a little… Horny~
“I feel good~ So good~” Barry repeated. Tails smirked at this. His transformation device had worked!
In reality, Tails had created quite a few... *ahem* personal gadgets in his spare time. The remote being one of them. Just because he's a technical genius, doesn't mean he doesn't have his own needs. He places the remote down and approaches he transformed quokka.
He places his hands on the feminine male's waist and gives him a sultry smile. "Good, good... Glad you enjoy it, Barry. Now then... how does it feel when I touch you? No discomfort?~" He asks him.
Barry just gave a shudder from the touch. Tails' hands felt so soft and gentle... wait, was Tails always this cute and handsome? How did he now just notice? "M-mmh... y-yeah... it feels really good, Tails..." He gave out a shaky response.
Tails smiles at that and chuckles. "Good answer, my lovely assistant~ And you'll do whatever I say?" The fox asked, making sure, and was met with a nod.
 “Anything?” Asked Tails.
“Anything~” Barry replied.
Tails gave Barry a very lewd smile before he whispered into his ear. “Suck my cock, cutie~”
Barry blushed and got down on his knees in front of Tails. “Y-Yes, Tails~”
“Please, call me… Master.” Said Tails.
Barry eyed at Tails’ dick. Completely amazed at how big it was. And it probably tasted good, too~ Without a second thought, Barry took to tip of Tails’ penis into his mouth.
Tails let out a shaky moan. “Haaah! That’s it, Barry~”
Barry started working Tails' cock, bobbing his head and sucking with such skill, it almost seemed like he did it before. Another quirk of his device. Regardless, Tails moans in pleasure, really needing this. It sure beat regular old masturbation any day!
"Mmmhh... that's it, Barry... suck and worship my cock...~ You love it, don't you? The taste, the smell... the girth~" Tails said, placing a hand on top of Barry's head.
The femboy quokka could only groan in response, his cheeks flushed. Somehow, the words seemed right. If this is the kind of testing he was going to do for Tails... no, his Master. Then he wanted more!~
Barry continued sucking and tasting his Master's cock, loving every moment of it. Why hadn't he ever tried this?! He felt so stupid. Thank goodness his Master was here to set him on the right path!
"God... you look so adorable~ I bet you're just begging for more, right? You want more of my cock?~" Tails asked, already knowing the answer. The lusty look that Barry gave answered everything.
Tails began thrusting hard into Barry’s mouth and down his throat. Of course, it didn’t hurt Barry. In fact, it only added to the intense pleasure.
Tails gritted his teeth as he felt himself reaching closer and closer to his climax. “B-Barry, your master’s about to cum! Get ready for it~”
Once again, Barry gave him a lusty look as he braced himself for what was about to come. “Th-Then here it… COMES!” Tails moaned loudly.
Barry gave out a muffled moan as Tails’ cum shot down his throat and into his stomach. Barry couldn’t help himself as he came, as well.
Once Tails was finished with his orgasm, he let Barry pull away and take a few deep breaths. “Was it good?” He asked him.
“Yes master~ S-So good…” Barry panted.
Tails seemed pleased at that, he was still hard. He wasn't done yet. "Very good, Barry. Now then... show me that beautiful ass of yours~" He commanded the quokka.
Barry happily obeyed and turned around, showing off his new plump and fat ass. Just the sight of it was already making the fox more aroused. He gripped the male's waist and rubbed his erection between those fat cheeks.
"Mmm... I'm gonna fuck your ass, Barry... would you like your Master to fuck your new femboy ass?~" He chuckles, hearing Barry give out a shaky moan and nodding his head quickly, he turned to stare at his Master with such a needy expression.
"Y-yes..." He says quitely. His own cock twitching with excitement of finally having his Master's cock inside of him.
"What was that? Couldn't hear you." The fox pretended, enjoying seeing his assistant squirm a little.
 “P-Please, fuck me, Master!” He begged a little louder. Wanting, nay, needing Tails’ huge cock in his fat ass.
“Hmm…” Tails hummed. “He more specific. What do you want me to do?”
“I want you pound my ass and cum inside me! I need it!” Barry shouted. Tails smirked at this.
“That’s better~” Tails replied before slamming his dick inside Barry’s ass.
“Aaahn~” Barry moaned. “Yeeees~ Fuck me, Master! Fuck me hard!”
“Ask and you shall receive~” Tails replied before thrusting hard into Barry’s ass. Watching his cheeks bounce and jiggle every time.
Barry was reduced to a moaning mess, his eyes rolling back and he had a dumb smile on his face. Whatever lingering thought he had was long gone by now. Now being dominated by his Master.
Tails moved his hips, thrusting inside the moaning femboy, hearing his cute moans and groans of pure and utter bliss. "Mmhh... that's it, Barry...! Moan for me! Moan for your Master you fucking sexy femboy slut!~" Tails says, showing Barry no mercy.
"A-aah!~ Yes, Master!~ Fuck me!~ This is what I'm good for!~ You're cock is the best ever!!~" The moaning quokka says loudly, not even caring if anyone heard him or not.
"You're such a good assistant, Barry~ I really needed this so badly, y'know? You can really make me happy~" The horny fox says, feeding Barry some new thoughts as he uses him as a living fucktoy.
Barry was reduced to a moaning mess, his eyes rolling back and he had a dumb smile on his face. Whatever lingering thought he had was long gone by now. Now being dominated by his Master.
Tails moved his hips, thrusting inside the moaning femboy, hearing his cute moans and groans of pure and utter bliss. "Mmhh... that's it, Barry...! Moan for me! Moan for your Master you fucking sexy femboy slut!~" Tails says, showing Barry no mercy.
"A-aah!~ Yes, Master!~ Fuck me!~ This is what I'm good for!~ You're cock is the best ever!!~" The moaning quokka says loudly, not even caring if anyone heard him or not.
"You're such a good assistant, Barry~ I really needed this so badly, y'know? You can really make me happy~" The horny fox says, feeding Barry some new thoughts as he uses him as a living fucktoy.
“Haah! Ahaha!” Barry moaned out. “H-how else can I-? Mm! Help you, Master?”
“Become my personal fucktoy, Barry; give me relief whenever I ask for it!” Tails groaned. Really getting into it as his head was filled with all sorts of lewd ideas.
Barry nodded rapidly at this. “Y-Yes, Master! I’ll be your fucktoy! I… I want…”
“Say it~” Tails beckoned as he thrusted deeper. Eager to hear what Barry was trying to say.
“I want you to cum inside me!” Barry begged. “Full me up! That’s all I’m good for! PLEASE!”
Tails gladly gave the new slut exactly what he wanted, thrusting faster and harder until he slammed deep inside of Barry. He gave a loud moan, filling up the femboy with his semen. "AAHHH!!!~ Take it, you fucking slut!~ You're my fucktoy to use!~" He wasn't even hiding his intentions anymore.
Then again, what could Barry do? Nothing. He could just accept his new role from now on. Barry's eyes roll back, his tongue lolling out as he gave a high pitched scream of pleasure, also blowing his own load. He felt so... happy~ Complete.
Tails pulls out and stains Barry's ass with his cum. He reaches for his toolbox and plugs Barry's asshole with an anal plug, keeping his semen inside. "Mm... a good look for you, my sexy assistant~" He chuckles. Then, another idea popped into his mind... he needed some relief too.
"Since you're such a good assistant, Barry. You deserve a reward, cutie~" He says, and that peaks Barry's interest. A reward? From his Master?
"Wh-what is it? I'll do anything Master! I'm all yours!" Barry said, full with eagerness.
“Get down on your knees and close your eyes.” Tails ordered him. To which Barry happily obliged.
With his right hand, Tails grasped his cock and began peeing into Barry’s mouth. Barry, while surprised, gladly gulped it down while slowly jerking himself off.
“You like the taste?” Tails asked. Barry nodded. “Mmh… I love you, Barry~”
And he had a sneaking suspicion that Barry felt the same way. He was certainly gonna be here for a while, that’s for sure~
After finishing up, he bent over and presses his ass to Barry's face. "Ahh... go ahead and taste it~ I love you so much, Barry~ If you're good... I'll even let you fuck me~" He says and moans, feeling Barry's tongue licking his entrance.
Barry was all too excited and happily rimmed his Master. He would do anything to make his Master happy. Anything~ If he was used as a fucktoy, a toilet... it didn't matter. He would happily obey~
"Mmmmh~" Barry moans as he tastes his Master's asshole. It was simply amazing, he never wanted to to stop!~
"Aahh... g-good boy...~ You're such a good obedient slut~" Tails priases him, and the quokka's cock twitched at that. He was a good boy~
Barry didn’t know how much time had passed since that fateful day. Days? Weeks? It didn’t matter did it? He was with his master now, and it was all good.
No one else knew what had really happened to Barry. In fact, it became a mystery if anything. Still, Tails had to keep this a secret for the rest of his life. A point that he gladly accepted~
Tails played stupid, having no idea what happened to the poor mobian quokka. But behind closed doors, he knew full well where he was. In his very own home as his personal cumdump. Tails tested all sorts of devices of him of a sexual kind, and of course, had his way with him. And if Barry did a good enough job, he would rarely fuck his Master as well.

As for Barry himself? He was forever changed on that fateful day. Gladly accepting his new feminine body and horny and needy nature. He gladly sold his soul and body to Tails, letting him do whatever perverted thing he desired.

His mind was forever broken, now begging to be used by his smart and lovely Master. Right now, as Tails finished his act of not knowing where Barry was, he arrived in his bedroom and saw the femboy quokka presenting himself, his legs spread aside and his hands stretching his abused hole.
Hearts filled his eyes as he stared lovingly at his Master. Tails smirks and closes and locks the door, his cock already exposed and hard upon the sight.
Throughout the day and night, all you could hear was a slutty quokka's moans and the creaking of the bed. Oh, yes. This was definitely worth inventing that remote, 100%
And now... Barry the Quokka... was all his~
THE END