Ignatius 'Iggy' Koopa had noticed that Ludwig seemed to be in a much better mood since his father basically ordered him to relax. They still have the occasional planning session and wondering what invention to make, but Ludwig managed his time much more efficiently. But still... what caused him to change this drastically?
As insane as Iggy can be, he wasn't an idiot. There was a reason why he was the inventor of the group, second to Ludwig. He had to find this out for himself. So, later on, he saw Ludwig sneaking out of the castle and heading towards Neo Bowser City. He had become the frequent visitor of the place as well.
Strange. What could his dear older brother be doing in a place like that? He trailed behind him, making sure to stay hidden. Finally, he trailed him to a building which caught his eye. It was a strip club called the Lucky Koopa. He's vaguely heard about this place in passing. It was a special club where all sorts of species hang around and do lewd acts for clients or mainly to pass the time. Usually all male.
"Wait, is this where Luddy's headed? Didn't take him to be the kinky type. Now I GOTTA check it out!" Iggy said and chuckles, he makes his way inside and was met with some club music. Upon actually entering the establishment, he was surprised at how well kept and clean it was. Hell, it put most other venues to shame!
Iggy approached a Koopa who he assumed is the host.
"Welcome to the Lucky Koopa! Oh? Prince Iggy? I didn't expect you here. Did Prince Ludwig invite you?" The Koopa said, not used to seeing the other royal here.
"Hehehe~ Nope! I'm just curious as to what's goin' on! Say... is Luddy performing?" He asked, getting an idea, and one he wanted to try for a while. Now was his chance!
The Koopa checked the schedule and found a free spot. "Ah! There's a free slot open for the taking. Would you like that one, Prince Iggy?" He asked as the Koopaling waves it off.
"Enough of the Prince business. Just call me Iggy. Right now, I'm just a regular guy lookin' for some fun." He says to which the Koopa nodded in understanding.
"I got ya. The room available is... Room 8. Here's the key, and please... enjoy yourself~" The host said and handed the Koopaling the key with a smile. Iggy gladly took it and went on his way.

He passed by the stage area and saw some performances. The crowd was eating it up, and he saw Ludwig showing his stuff. He was wearing blue thigh high socks, arm warmer and a thong. He looked like he truly belonged in a place like this, flaunting himself at the pole and even shaking his plump ass to the cheering, perverted audience.
Iggy gave a low whistle at the sight, he couldn't lie. Ludwig pulled this off so damn well~ Quite the look to boot.
"God damn...~ Look at'em go. Still got nothing on my old caboose, hehehe~" Iggy chuckles to himself, he has quite the figure like Ludwig, only, his ass was very thick and big. He loves showing his ass off. He was pretty shameless like that, not that he cared.
He made his way down the halls and found the room in question, he inserted the key and heads inside, looking over the place. It had a bed, a closet for revealing clothing of their choice, a bar with all sorts of drinks and a couch with a mini stage with a pole.
"Aw, man... these guys are lucky! Maybe I should install a pole in my room... Eh, ideas for later!" He was actually kind of impressed. These guys knew what they were doing. It was like a home away from home kinda deal. Might as well get himself comfortable.
He sits at the couch and begins to wait, until Ludwig arrives. Besides flaunting his Koopaling booty, Iggy was also a huge anal slut. That's the only way to get him off, anything else? Nothing. And believe him, he's tried. He has no idea why, maybe his body preferred that way.
Either way, nothing he could do about it. He then wonders... maybe he could join here. If Ludwig can do it, then maybe he can. And maybe he can scratch that itch he's been trying to get rid of for so long. It would be a win-win!~
"I'm gonna have to ask after this is over. Oh, man... Just thinking about is making me excited!~ Nyahaha!" He laughs to himself as he imagine some lewd thoughts. Finally, he heard the door opening and closing, smirking to himself and waiting until the eldest Koopaling makes it to the mini stage for a surprise. For now, Iggy keeps quiet, but his hair style is very obvious.
Upon taking a glance at Iggy, Ludwig's jaw dropped. What was he doing here?? Oh God… Was he found out? Would he snitch to anyone?!
"I-Iggy!?" Gasped Ludwig. "I… Ju… You…"
Iggy smirked as Ludwig stuttered. Trying to think of an excuse or at least a plan to get out of this one. "Yeah, that's me. Hey." He said. Waving slightly.
"Di-Did father send you here?" The eldest Koopaling asked. Hoping and praying that there was some kind of misunderstanding.
Iggy shook his head. "Nah, I just saw you sneak out." He explained. "So… This is what you've been doing, huh?"
Ludwig sighed. Having little choice than to come clean. "Okay, you caught me. Father had recommended this to me and I kinda gotten used to this lifestyle." He explained. "Just please don't tell father about this!"
Iggy smirked lewdly. Who knew someone like him was such a little slut? Hmm… He would let him off the hook, but seeing him like this gave him an idea. After all, a Koopa has to have a little bit of fun, right?~
"I bet dad would be interested in hearing about what you've been doing." Said Iggy. Making Ludwig's eyes widen. "But if you don't want me to tell…"
He paused and revealed his dick before continuing. "You're gonna have to put that mouth to work~"
Ludwig could barely believe what he was hearing. Was his brother actually...? But he was serious. But he also doesn't want his father to know what he's actually doing when he has free time. God damn his crazy genius of a sibling.
"... You're serious." Ludwig said to him, eying the smug Koopaling and his erect dick.
"Yyyup~" Iggy chuckles, of course... he was partially lying. But hey, might as well get what he came for~
"Fine. But promise me you won't tell on Father. God forbid I need his wrath in here..." The eldest mutters at the end and got into position, on his knees and facing Iggy's cock.
"Of course, Luddy! Don't ya trust me?" The mad Koopaling says in a teasing tone.
"With you, I have a 50/50 chance honestly. You're not even bothered that we're..." Before Ludwig could finish he heard the other Koopa sigh in annoyance.
"Don't care. Less lip, more suck!" And that was the end of that exchange. Ludwig could only roll his eyes, might as well get it over with. He opens his mouth and began sucking the head of Iggy's cock, earning him a moan from the other male.
"Oogh~ Damn, you've got a good mouth, Luddy!" Moaned Iggy. Ludwig only blushed at this and went deeper. Continuing to taste more of his brother's cock. He knew this was taboo, but… Why did it feel good?
Iggy continued moaning and groaning. Eventually, he grabbed the sides of Ludwig's head and began thrusting down his throat.
"Fuuuck~ Take my cock, Luddy!!" He moaned. Ludwig just took it. What else was he supposed to do? He didn't want Bowser finding out about this, after all…
As Iggy continued facefucking his brother, he began leaking pre. He gritted his teeth as he felt himself getting closer and closer to climax.
"Hoogh… I'm so close…!" Iggy groaned before going even harder. Ludwig squeezed his eyes shut as he braced himself for Iggy's cum.
Iggy moved Ludwig's head faster and faster, breathing heavily. Finally, he gave a loud moan and filled up his elder brother. Ludwig groans, swallowing the other Koopaling's cum.
"AAAHHH!!!~ Fuck yeah!~ Have a nice taste of my cum, Luddy!~" Iggy groans out, holding his brother's head in place as he gave a few more spurts. Ludwig gulps it down, it was a lot! And he didn't expect his brother would have been this pent up.
His stomach bulged a bit as he could feel it slowly trickling down. Iggy released his hold and sighs, leaning back against the sofa with a smile.
"Hahhh... holy shit, bro... I can see why you enjoy this~ FUCK masturbation, nyeheh~" He chuckles as Ludwig recovered from the intense face fucking session.
"*cough*... G-glad you enjoyed it, Iggy. So, I assume we're done now-" He was met with another fit of giggles from the crazed Koopa.
"After this?! Oh, hell no, dude! We're just gettin' started! You think I'm gonna stop after getting some head? What do you take me for?" Iggy says, way too gleeful for something like this. Ludwig sighs, he should've known.
"Come on, let me see that ass of yours, Luddy~" Said Iggy. Sighing again, Ludwig reluctantly obliged. "Damn, you've got a nice ass~ Not as good as mine, per say, buuut…"
Iggy began hot-dogging his cock in between Ludwig's cheeks. This caused him to let out a low whine. "P-Put it in, already…" He mumbled.
"What was that~?" Iggy asked as he continued teasing his older brother.
"F-Fuck me, dammit!" Ludwig groaned a little bit louder.
"Didn't quite catch that." Iggy replied as he went a little bit slower. If this was his only chance to fuck Ludwig, he would enjoy every single second!
"I… I want you to fuck my ass, Iggy!" Ludwig begged loudly. "Don't make me beg!"
Iggy smirked at this. "That's better~" He said before positioning himself and finally slamming is cock inside. "AAH! Take it, Luddy!"
"Aaahn~" Ludwig moaned as Iggy finally gave him what he wanted. "Yeees~ Fuck me hard, Iggy!"
Iggy grabbed Ludwig's waist and began going rougher on the elder Koopaling, hearing his slutty moans as he bucked his hips.
"Mmmh... fuck, Ludwig...! Your ass feels so good...! It's like it was made to be fucked!~" Iggy moans out, he then used his free claw and rip off Ludwig's thong and began stroking his cock, sending more pleasure to the other male.
"A-aahn!~ Hhah!~ I-Iggy...!~ Oh God, yes...!~" Ludwig moans loudly, feeling both of his ass and cock being pleasured. The intensity of his brother's thrusts felt so good. "H-harder!~"
Iggy pulled out, leaving the eldest whining from the emptiness, before he was lead and pushed onto the bed, lying on his back. Iggy shoves his cock back in, eliciting another slutty moan from the normally calm and mature Koopaling and resumed stroking his cock.
"Damn, Luddy... You're the biggest slut ever!~ You must really enjoy taking dick!~" Iggy chuckles and gave his brother's cock a squeeze, making Ludwig whimper.
"Nnhg...! Y-you have no idea, Iggy...! D-don't stop...!" He begs, not even caring how he sounded. Forget how taboo this was, this was fucking amazing!~
And so, Iggy continued, pounding away at Ludwig's hole and furiously stroking him off, until he started leaking pre.
"I'm gonna cum, Luddy...! Want me to cum in this fat fucking ass of yours?!~" He shouts, quickening his pace.
"YES!~ CUM INSIDE ME, IGGY!!~ I'M GOING TO CUM SOON!!~" Ludwig yelled, gritting his teeth. He couldn't hold back much longer.
"Th-Then here it comes!" Iggy shouted.
And together, they came at the same time. Ludwig came on his chest and gave whole Iggy filled him with his. Once he was finished, he pulled out stained the older Koopa with the rest of his cum.
"Heh! Guess you're off the hook now." Iggy chuckled. He turned to leave Room 8, but suddenly, Ludwig grabbed his hand and pulled him close. "What the-?!"
"We're not done yet, Iggy. Bring me that ass you love showing~" Lugwig breathed before tossing him down onto the couch with his bubble butt in the air.
Damn, it looked better in person! This was gonna be so much fun~ "H-Hey, no hard feelings! I was just playing, and-" Iggy began, but was cut off when Ludwig slapped his ass. Causing it to jiggle.
"Heh… Can't let you have all the fun, after all~" Said Ludwig before positioning himself and thrusting inside. "MMgh! Such a good ass!"
"A-Aaah! Oh, fuck~" Iggy moaned as he felt Ludwig's cock inside him.
Ludwig began thrusting hard into the fat-assed Koopa. Watching his cheeks bounce and jiggle was so worth it~ In fact, why was he so nervous before?
Iggy moaned and groaned as Ludwig showed no mercy, as well as no signs of slowing down. "F-Fuck me, Ludwig~" He moaned. "Fuck my fat ass!"
Ludwig couldn't help but chuckle, seeing as the tables have turned. He heard Iggy's moans and seemed to be enjoying it even more when this was done on him.
"Now then... I wonder who's truly the biggest slut, Iggy? You seem to like taking it in the ass a little TOO much~" He teases as he gives his brother's ass a spank, making him squeal with pleasure.
"Oogh!~ W-wh-what can I say...? I'm an ass guy... nyehe-ohhh!~ Oh, fuuuuuck...!~" He was interrupted with another smack, making his cheeks jiggle.
"Do you want me to pound your fat, bubble butt, bitch boy ass, dear brother?~" Ludwig says, taking on a dominant tone. It seems he was also getting in the mood. How had he not tried this sooner? He really missed out. Well, that'll be rectified.
"Oooghh...!~ L-Luddy...!~" Iggy shamelessly moans, his tongue sticking out and his cock twitches. He was giving another harsh spank on his bubbly rear and whimpers.
"You didn't answer the question, Ignatius. Do. You. Want it?!" He said with every smack, making Iggy's ass cheeks red from the abuse.
"I DO! Oh God! Yes I do!" Iggy shouted as hearts appeared in his eyes. He began leaking pre. "I-I'm getting close, Luddy! I wanna cum~"
Ludwig smirked as he saw how raunchy Iggy had become. "Cum for me! I'm getting close, as well~" He moaned.
Iggy blew his load first and came on his stomach, face, and a little bit in his hair. Ludwig was honestly surprised at this. Damn, he must've been pent up~
With one final thrust combined with a hard spank, Ludwig came inside of Iggy. The two of them moaned louder than ever as it happened. Ludwig pulled out and eyed Iggy up and down.
Iggy's stomach was bulging from the amount of cum inside of him, he had hearts in his eyes, and his tongue was flopping out as he panted heavily. Ludwig couldn't help himself and chuckled at how cute Iggy looked in this state.
"Haaah… Luddy's cum is inside me…! So good~" He sighed and giggled stupidly. "I feel pregnant~"
Ludwig felt something down below. He had to pee. However, this gave him an idea; probably the best idea he had since first coming here! "Iggy, I'm going to ask you a question. If you tell the truth, you can have a reward." He began. "Do you want to be a part of The Lucky Koopa with me?"
Iggy heard of the proposition and nodded frantically, giving a dumb smile.
"YES!~ Yes, yes, yes, a thousand time yes!~ If it means I can take more dicks in my ass, I'll take it!~" Iggy answered, giggling dumbly, this is exactly what he was thinking of! With this, he can finally scratch that itch, so to speak.
Ludwig seemed satisfied with the answer, and decided to push further, to test Iggy's loyalty, but to also mess with him.
"Even if you have to keep this a secret from Father?" Ludwig says, his cock twitching and just waiting for release.
"Yes!~ I promise to keep it between us! Just please, please, please, PLEASE!!! Lemme join already!!~" The green haired Koopaling begged, and spread his abused ass cheeks, not even caring that some cum was leaking out.
"That's a good answer, Iggy~ You'll fit in perfectly. And here's a reward of many~" Ludwig shoved his cock back inside Iggy's hole and let loose his warm piss inside of him.
The other Koopa threw his head back and moans loudly, feeling the warm piss filling him up. "Hhahh... fuuuuck... This feels so good... amazing... a-awesome... ahahaha...~ Luddy...~" Iggy moaned happily, once Ludwig finished, he pulled out stained his brother's face and chest, marking him. He didn't seem to mind.
"There's a good Koopaling~" Ludwig sighed. "Now get on out there and show 'em what you got!"
[…]
Time had passed since that fateful day. And like Iggy promised, he didn't tell Bowser, or anyone else for that matter! Why would he? He never wanted this to end!
Currently, he was riding on Ludwig's cock. Once again giving both of them immense pleasure. "Oh fuck yes!" He moaned. "I love having your cock in my fat bubble butt!"
"I'm glad you think so~" Ludwig replied before slapping his brother's ass once again.
Like Ludwig, his life was filled with cocks, cum, and maybe a little piss~ Certainly, things couldn't be better…
END