Disclaimer: I do not own any of the material appearing in this story. The OC's belong to their respective owners.


One Day After The Galarian Star Tournament

BGM: Bowser's Castle (Fortune Street)

Bowser woke up from his bed with a stretch, letting out a massive yawn as he walked out of his room while rolling his shoulders. He then wandered into the kitchen and then pulled out some bread and put in the toaster. He walked over to the fridge and looked inside, then he pulled out a jug of "Evil Moo Moo Milk" and poured himself a glass right as the toast popped up severely burnt. He then pulled out butter and buttered the toast, then happily took a bite.

"Ah, delicious." He said.

"Papa! Papa!" Junior came running in the door excitedly.

"What is it, son?" He asked.

"I've got exciting news!"

"Has Mario surrendered?"

"No."

"Peach accepting my offer as my bride?"

"No."

"RWBY finally giving up?"

"No! None of that!"

"Then what's the good news?" He asked, taking a swig of his milk.

"Aunt Bowsette's coming to visit!"

Pause BGM

Bowser immediately did a spit take. "Sh-she's WHAT?!"

"Yeah! Thought I'd tell ya the good news!" Junior giggled and walked away happily.

"…After all these years…" Bowser said, walking over to a painting where he would see himself alongside a female Koopa, as she looked slender, her chest was a bit bigger than his, her hair was longer and touched her shell, but she looked nearly identical to the Koopa King. "You finally decide to come back home." He said and let out a chuckle. "Wonder what kept ya for so long. You went out to get yourself a smaller snout and never came back… never even returned my calls."

He let out a chuckle. "Well, except that you told me to look after your kids." He said and then grinned. "At least now I'll get an answer to why you disappeared for so long."


Thirty minutes later

Resume BGM

"Do you hear a motorcycle?" A Koopatrol asked.

"I do." Another nodded as they would see a motorcyclist approaching them. The motorcycle in question was dark purple in color and had Team Yell's Logo plastered on one side while the other had "Punk Rock forever." In big white letters as the motorcycle parked in front of the castle. The motorcyclist had a dark purple jumpsuit on with spiky bracelets on the sleeves, with black fingerless gloves as the helmet was black and had Team Yell's logo on the left.

"Who are you?" The Koopatrol asked.

"What, you don't recognize me?" The motorcyclist asked as she took off her helmet and shook her head out.

"Oh! Marnie!" The Koopatrol exclaimed. "We're so sorry… we didn't recognize you with that new outfit."

"Made it myself." Marnie said as the Koopatrols opened the gates for her. "Thank you." She said as she drove in and then parked it near the Clown Cars, putting her helmet on the handle as she walked over and noticed the Koopa Troop hard at work and putting up decorations.

"Put your backs into it, on the double!" General Guy ordered.

"What's going on here?"

"Hmm? Oh, hello Marnie!" General Guy greeted. "We're getting ready for a special occasion."

"Special occasion being kidnapping Peach… again?"

"Nah, that's in a few days. We're getting ready for a family reunion!"

Marnie raised an eyebrow. "Family reunion? For what… the Goombas over there?" She asked, pointing her thumb at some Goombas balancing a ladder on their heads while a few Biddybuds were riding on it.

"Nope. Her name is Bowsette."

"…Who?"

"Ah, I'm not surprised you've never heard of her. She is Bowser's twin sister! She went off to Neo Bowser City and never came back. The last Bowser's heard of her was when by a phone call asking him to take care of the Koopalings."

"Mama's comin' back~! Mama's comin' back~! Shake a leg!" Lemmy said, rolling by them on his ball.

"Hmm… I would assume that she died, but if she's coming back… then I guess she's alive."

"Believe me, we all assumed the worst… but hearing her voice again surprised all of us." General Guy said.

"Wow… I wonder what she's like?"

"Hey Goth Punk!" Roman called out. "Can you help me out with these nails?"

"Mmm… close enough…" Marnie muttered as she walked away. "I'm coming!"

General Guy turned around to some Shy Guys. "Paint faster!"

"What do you think we're doing!"

End BGM


A few hours later, away from Bowser's Castle…

"Mmm…" A woman had her arms folded, looking directly at Bowser's Castle. She had horns sticking out of her blonde hair, a spiky Koopa Shell was on her back, and was wearing a black leotard that barely covered the top of her chest. She also had a tail behind her. There was also a Super Crown on top of her head. "After all this time… my home is right there." She said and took a deep breath. "Nnngh… I don't think this is a good idea. Everyone's gonna think I'm a freak for looking like this…"

"Honey, breathe…" A voice said, capturing her attention as she looked directly at a very pale ghostly woman. She was wearing a white gown, and it too, was barely covering her chest. Her hair was white and wispily long to her lower back. She even had an umbrella over her head. "It's going to be okay."

"Rei, are you sure this is a good idea? I mean, look at me! I'm not the same Koopa as I was before several years ago."

"I know… but it's going to be okay. Besides, you're worrying over nothing. I was the one who suggested coming here… I've always wanted to meet your family."

She took a deep breath. "You're right… I'm still the same woman from before." She said as the ghostly woman gently grabbed her hand. "Alright… I'm ready." She took a deep breath. "Let's do this!" She said as she walked over with the pale woman behind her.

"So, if Mario were to die, I'd take his hat." The Koopatrol said.

"Why his hat specifically?"

"Oh, ya know… I'm always curious what it's like to wear the iconic hat."

"Doubt he's gonna die anytime soon."

"Okay, so now I said what I'd do… what about you? What would you take from anyone's corpse?"

"Well… I think I'd take Ruby's scythe."

"Her scythe?"

"Yeah, a scythe that's also a gun? I want to reverse engineer it and see what makes it tick. That isn't even natural! Come on, man… I'm sure you're also curious about how it works."

"Honestly? I'm more curious about that rapier with the gun chamber."

"You sure it's a gun chamber? It doesn't even turn into a gun as far as I know."

"Well, what would you call-… hold on. Who's that?" The Koopatrol pointed his spear at the intruding women.

"Is that… Peach? In a black leotard? With horns and a Koopa Shell?"

"Goodness me, that's quite the fashion statement…"

"Hello boys~!"

"Peach… you want to explain why you look so… goth?"

"I'm not Peach, I'm Bowsette… and this is my wife, Boos-… huh?"

"Mmm… hi…" Boosette shyly waved from behind her.

"Bowsette, huh? You're gonna have to prove that you're-" A stream of fire came out of Bowsette's lips, nearly scorching the two. "YIPE!"

"That proof enough?" Bowsette grinned.

The two Koopatrols were shaking. "We-we-welcome back, Lady Bowsette!" One of them saluted.

"Thank you~!" Bowsette smiled and walked inside. "Wow! Things haven't changed a bit." She said and glanced over at the custom made Clown Cars and Marnie's motorcycle. "…Okay, those are new… but besides that, thing's haven't changed one bi-" She spotted Marnie, Neo and Roman helping put some decorations up. "…Okay, they're new too. Man, how long have I been gone…?"

"Too long…"

"Yeah." Bowsette nodded and walked over, then noticed Bowser talking to Kamek. "Ah! There he is." She said and happily walked over. "Ooooh Bowsie~!"

"…Bowsie…?" Bowser wondered and then turned over to Bowsette. "…Peach? What's with the get up?"

"Ah, I knew you wouldn't recognize me. It's your ol' twin sister!"

"Twin sister? …Bowsette? Pffft! Yeah, I'm not falling for it. It's gonna take a lot more than-" Bowsette did the same thing on him like what she did to the Koopatrols. "Ack! …No way…"

"Sup?"

"Oh my…" Kamek mused. "It's actually her!"

In an instant, Bowser let out his signature roar that caught everyone's attention as he then ran over to Bowsette, the latter getting in a fighting stance with a smirk as Bowser tackled her to the ground as the two got into a fighting dust cloud.

"What the heck is going on?" Marnie wondered.

"I'm not sure…" Roman said as the dust cloud dissipated with Bowsette putting Bowser into a choke hold.

"Just like old times, eh big guy?" Bowsette grinned, as Bowser soon turned it around and had her in a choke hold.

"They may be skinny arms, but I recognize this strength anywhere!" He said.

"Hahaha!" Bowsette elbowed her as the two wrestled each other until it ended with Bowsette sitting on top of Bowser's shell. "Looks like I'm the winner this round! So that's what… 5,302,102 - 5,302,101 now? I lost track all these years!" She snickered.

"…Wait, that's her?" Marnie asked in surprise. "…I was… honestly expecting her to be more… Koopa-like." She said with Neo nodding in agreement.

"Alright, I gotta ask." Bowser spoke up. "Why are you all like this? You used to be a Koopa like me! Now you're… this."

"Oh…" Bowsette's smile disappeared as she got off of him. "Well… the truth is, I went to Neo Bowser City just to get some plastic surgery. I wanted a smaller snout. I thought it'd be an easy procedure… smaller snout, I'd look cute, no one would notice. I was planning on coming home right after… but…"

BGM: Scent of Silence (Kingdom Hearts: Chain of Memories)


"Congratulations, your surgery is complete!"

"…Why do I feel cold? Hell, why do I feel so light… I need a mirror!"

"Here you are!"

"HOLY SHIT! WHAT HAVE YOU DONE TO ME?!"

"You wanted a new body, so I gave it to you."

"I SAID I WANTED A NEW SNOUT, NOT A NEW BODY, YOU QUACK!"

"Ooooh, is that what you said? Forgive me, I've been hard of hearing as of late. It's what happens when you work in a Bob-omb Factory…"

"GAAAAAAAH! HOW DO YOU HEAR "BODY" FROM SNOUT?!"


"I became this… Koopa/Human hybrid… and don't get me wrong, I've nothing against humans. The problem is… I didn't want to be human at all. I just wanted a smaller snout… but instead, I wind up with the biggest idiotic doctor in the planet. To this day, I'm hoping he got his medical license revoked… but to make matters worse, the moment I walked out and saw my husband…"


"I'm out of here…"

"Honey, where are you going?! I'm still me! Just… way different… more than I bargained for!"

"I do not want to be affiliated with you. There's no way in hell I'm going to be seen with a human. As far as I'm concerned, the Bowsette I know is dead. Goodbye."

"Wait! Are you really just going to drop me like that?! After all we've been through together… we've been through the thick of it! A lot of pregnancies, fighting like an old married couple, a few broken bones… but THIS is where you cross the line?! You're just going to drop me because I'm a hybrid now?"

"…You're on your own…"

"Wait! Don't walk away from me!"

"Who'd want to be with a freak like you!"


"…Harsh." Bowser said.

"I… I was not myself after that. I lost everything that day… and, I was not in a right state of mind. Getting called a freak after getting dumped by your husband… I was worried that everyone, including my kids, would think of me as… some sort of freak. So I just… ran away."

"So that's why you told me to take care of the kids… you were scared."

"Yes… fear does things to you that you didn't think you'd ever do. I didn't mean to just… leave it all behind." She sighed.

End BGM

"…Wait a minute!" Kamek spoke up. "The universe was reset a few weeks ago, wouldn't that have caused you to go back to normal?"

"The universe was what now…? …That would explain the distortions…" Bowsette mused. "But no, I'm still the same human/Koopa hybrid."

"Another question… what's with the Super Crown on you?" Bowser asked.

"Oh this? Thought it'd look cute on me when I found it… it doesn't really do anything though, besides giving me a few coins now and then."

"Really? Let me try it." Bowser said, taking it off of her and then placed it on his head. Immediately, ten coins rained from the sky and landed in the palm of his hands. "That's it? Coins? Bah, this thing's worthless." He said, taking it off and tossing it behind him, where it landed in a lava pit.

"…Aww." Bowsette pouted. "It was a cute crown too…"

"So, you got a whole body change. You're still the same sister I know." Bowser said.

"Yeah… I know, but I'm not the only one who's a hybrid." Bowsette said, pointing over to Boosette who was pushing her fingers together shyly.

"Um… h-hi…"

"What's with her?"

"Well, she's a human/Boo hybrid." Bowsette said. "She has all the perks of a Boo. Floating, invisibility, traversing through walls, will o wisps-"

"Crippling shyness…" Boosette quietly said.

"That too." Bowsette sweatdropped. "Basically, when she was a young girl, she was known as Rei and her parents were whack-a-doodle scientists, but were well respected for their odd inventions."

"…Her last name wouldn't happen to be Gadd, would it?"

"Who?" Boosette tilted her head.

"Never mind."

"Aaaanyway, there was one day when she was about five years old when her parents thought what would happen if you were to combine a human and a Boo together… but they couldn't find any volunteers even when they nabbed a Boo. Rei climbed into the machine out of curiosity and they found their test subject. They went ahead and merged her with a Boo and they named her Boosette. Unfortunately, their machine exploded on them right after and they couldn't remember how to build it, so Rei was stuck as a Human/Boo hybrid forever."

"St-strangely… de-despite my newfound abilities and my… my shyness, I… I made a lot of n-new friends be-because th-they thought I-I was so c-cool a-and… aaagh, I'm sorry!" Boosette turned away while covering her face. "I promise you didn't do anything wrong, I'm just not used to interacting with new people! I don't do well at all!"

"When she got older, she moved out and went off to explore… and then she met me when I was at my lowest point. The two of us got to know each other rather well… managed to get her out of her shell and then one day, we developed feelings for each other and then it just snowballed from there to the point where we got married." Bowsette chuckled. "I don't really regret it."

"Ah, I get ya." Bowser nodded. "…She more active at night?"

"Yeah. She's not a big fan of the sunlight, which is she always carries an umbrella with her. Though at night, she's usually the life of the party… in more ways than one~!" Bowsette let out a seductive chuckle.

"Wait wait wait wait HOLD UP NOW!" A voice said as they turned to see the Koopalings. "You mean to tell us that you're our mother?" Roy asked, his arms folded. "For all we know, you could just be some human pretending and failing to be a Koopa."

Ludwig folded his arms. "Yeah, it's going to take a lot more than-"

Bowsette gasped. "Oh, Luddie! You've grown so much!"

All the Koopalings, besides Roy, gasped. "Did she just call you-" Wendy began to say.

"She did!" Lemmy nodded.

"Bahahaha! He doesn't allow anyone to call him that!" Iggy said.

"…Goodness gracious, it is her!" Larry said.

"Mother…" Ludwig began to tear up.

"MAMA'S HOME!" Morton yelled as most of them ran over and happily glomped her.

"Whoa… WHOA!" Bowsette fell on her back. "Ooof! Ha! Nice to see you kiddos again." She giggled, hugging them tightly.

"Wait, we're all just gonna accept that? She could've just been told to call him that!" Roy said. "Hello? Hellooooo! …Ugh, all my siblings are morons…"

"Roy, sweetie… it's me." Bowsette told him.

"You ain't my mother! You're just some nobody wanting attention!" Roy said and then walked off. "As far as I know… mom's dead."

"Roy…" Bowsette looked at him sadly.

"Ah, don't mind him… he'll come around." Iggy said as a finger gently tapped Bowsette on the shoulder as she turned her head and saw Junior.

"Heya auntie!"

"Auntie…?" She let out a gasp. "Junior?! Oh my goodness, I hardly recognized you!" She said, hugging him tightly. "Oh, it's been so long… I remember when you were just a little bitty thing!" She said and then ruffled his hair with a chuckle as Junior hugged her back.

"You may be different, but I know it's you in there!" Junior smiled.

"Hmm…" Bowser folded his arms and then inspiration struck him. "Hey sis… why don't you go inside the castle and look around for a while?"

"Hmm? Oh! Yeah, I was gonna go look inside anyway." She said and then hopped up. "Rei, you wanna come with?"

"S-sure!" She nodded as the two walked inside, and once the two were out of earshot, Bowser turned to everyone.

"Alright, new plan! Make this extra special, on the double!" Bowser ordered as everyone nodded and went back to work.


Meanwhile

"Mmm…" Yang lied on her back, looking directly at the ceiling but there was one thing on her mind. The Koopalings. She still remembered overhearing Iggy mentioning his mother to the Inklings, and the conversation she had with her team about who was their mother's name.

"Um, Koopie Koo?"

"Probably Diana."

"Hmm… Bowietta?"

"Bowsette! …What, too dumb?"

"…I have to know." Yang said as she turned to look at Apollo who was happily bouncing around. She could take him with her… but she didn't want to take him to a dangerous place such as Lethal Lava Land. She immediately pulled out her scroll and started to text.

Hey babe, want to watch the kid for me?

Sure, where ya headed?

Lethal Lava Land. I've been meaning to ask Bowser a question.

Oooh, yeah, I can watch him for a few. Drop by Garreg Mach!

Okay, see you in a few. Love you!

Love you too.

Yang chuckled. "Glad I have a guy who'd love to watch him." She said and looked to Apollo. "Hey kiddo."

"Pew?"

"Wanna go see daddy? …Uh, your new daddy?"

Apollo's eyes sparkled. "Pew pew!"

Yang giggled. "I thought as much." She said, gently picking him up as he moved his way into her jacket pocket. "Let's go."


Back at Bowser's Castle…

"Ah, this takes me back." Bowsette said as she wandered around the castle with Boosette.

"It's so… spacious. Goodness!"

Bowsette giggled, playfully elbowing her. "A bigger place to haunt, right?" She winked, causing her to snicker.

"Yeah…" She smiled as they wandered around where Bowsette would wander into the kitchen and see a photo of herself and Bowser.

"Oh, look at that… I used to be so ripped and now… I'm not."

"What are you talking about? You're still strong."

"Yeah… that's true." Bowsette said as Boosette looked at the photo and then let out a giggle. "What's so funny?"

"Talk about a major weight loss program!" She giggled as Bowsette started snickering and burst out laughing.

"I didn't think of it like that!" She laughed as she put the photo down as the duo started to explore the castle a bit more until they came across a room. "Cinder's… room?" Bowsette tilted her head. "Who?"

"Girlfriend?" Boosette wondered, putting her hand on her chin in curiosity.

"One way to find out." Bowsette said as she opened the door as the two peeked in to find a room in such a mess. The both of them would notice Cinder in a fetal position, her eyes blood shot, and her hair looked quite frazzled.

"Who… who are you…" Cinder quietly asked, looking up and seeing the two, as both of them would notice a collar around her neck.

Oooohdefinitely not a girlfriend. Bowsette thought. "I'm Bowsette and this is my wife, Boosette."

"H-hi…" She said shyly.

"I'm Bowser's twin sister!"

"…Twin…? He never mentioned you…"

"Yeah, it's probably because he thought I was dead and didn't want to bring up any sad memories… I can understand that." Bowsette said.

"…Are you sure you're a sibling to him? You look nothing alike."

"Well of course… it was a plastic surgery that went completely wrong."

"Mm… who's to say that you are. You could be some freak who's trying to be Bowser's sister!" Cinder said as Bowsette let out a gasp, her body trembling as a result. "Get… get out of my room!" Cinder yelled as the two backed out of the room.

"Well… that went poorly…" Boosette quietly said as they closed the door. "I'm guessing she's having a bad day. The collar was quite the eye sore…" She rubbed her chin in thought. "Prisoner, maybe? …No, that doesn't seem to be the case. Fashion statement? No… I don't think that'd-" She would then hear sniffling as she turned around to see Bowsette leaning on a wall. "Honey? Something wro-… oh." She immediately put a comforting hand on her bare shoulder.

"I hate it…" Bowsette groaned.

"Her saying that word brought back bad memories, didn't it?"

"Of course it did!" Bowsette turned around and looked at her. "Look at me, Rei! You think I wanted to be a human/Koopa hybrid? I just wanted a small snout, not a complete species makeover! All my life, I was a Koopa. A younger sister to Bowser by just a few hours apart… and when I went just to get a smaller snout, I… I get turned into this! My husband left me because he thought I was a freak… for years, I thought I was like this. When I met you, I thought you'd feel the same way… but you saw past that!"

"I mean, of course I did. We became best friends into something more than that."

"I know! …But… coming here was a mistake."

"Huh? What makes you think that? For years, I was curious about your family and today, I finally put my foot down and just asked that we spend some time visiting your old home."

"Rei… you don't get it. Everyone was staring at us and wasn't really welcoming. Sure, Bowser, Kamek and my kids were welcoming… minus Roy, but… no one else really bothered to say anything."

"Well, let's put it this way. They remember you as a Koopa, so seeing this Koopa coming back all these years later, now turned into a Human/Koopa hybrid… it probably did take some time to adjust." She let out a smile. "I bet they're planning on making something special for you."

"No… they're not. They thought of me as a freak, especially that Cinder lady!"

"Just ignore Cinder then! Don't let this get to you…"

"What's the point?" Bowsette started to walk away. "We're going back home."

"Hon…" Boosette frowned and walked after her as Bowsette put her hands on the doors. "Are you sure you want to go through with it? Leave everyone behind again?"

"It's either I get abused by everyone calling me a freak or I walk away, Rei… there's no other way."

"Mmm… are you absolutely sure you want to go through with this? Babe, I've supported you through everything, and while I'll support your decision on this… it's just… can't you just give everyone a chance? Your fear is controlling you." She explained. "Just, please… think about this."

Bowsette clenched her fists, a tear ran down her cheek and pounded on the door. "Dammit!" She quietly said as Boosette walked over and gently wrapped her arms around her waist, her head on her back. Boosette would slowly kiss her on the cheek.

"Like I said…"

"I know…" Bowsette wiped her eyes. "…Let's go."

Boosette slowly nodded. "Right." She said as Bowsette opened the doors… only for the both of them to see party streamers and everything else was decorated around the courtyard.

"H-huh?"

"Welcome back, Bowsette!" The Koopa Troop exclaimed at once as Bowsette looked around. Party games, refreshments, balloons, everything was set in place as Bowser walked over to her.

"Wh-what the…"

BGM: Friends in My Heart (Kingdom Hearts II)

"You may be different, but you're still the Bowsette that we know!" A Hammer Bro exclaimed.

"All hail lady Bowsette!" A few Goombas chanted.

"Our mama rules!" Larry exclaimed.

"Welcome back!" A Lakitu called out.

Bowser walked over to her. "You may look different, and you may be an entirely different species… but you're still my sister." He said and then put his hand out to her.

Bowsette was at a loss for words as Boosette walked beside her, her hands behind her back and smiled at her. "Do they really think of you as a freak?" Boosette smiled.

Tears ran down her cheeks as she put her hands over her mouth. "Rei…"

"Yes~?"

"We're staying!" Bowsette said, quickly hugging Bowser as she sobbed into her chest. Bowser let out a chuckle and patted her back.

"Well, how about that." Marnie said, leaning on a wall with a chuckle with Neo smiling.

"Heh, ain't that somethin'." Roman chuckled.

"Bah… morons…" Roy muttered under his breath.

Bowsette wiped her tears and then pulled away from Bowser, letting out a giggle. "So… this party isn't gonna celebrate itself, is it?"

"Heck no. Let's get this party goin'!" Bowser declared.

End BGM


Just outside the castle walls

"Looks like they welcomed her with open arms." A Koopatrol said.

"Yeah, sounds like a party!" The other chuckled.

"…Wait, what's that up ahead?"

The both of them would see a Galarian Zapdos running toward the duo as Yang was riding on it. "Is that…?"

"What's the bombshell doing here with a Chocobo? …That is a Chocobo, right?"

"I think so!"

"Comin' through!" Yang said, as Zapdos leapt through the air and over the walls, both Koopatrols jawdropping at the sight as the two were out of sight.

"…We suck at our jobs, don't we?"

"Yes, yes we do."

Zapdos landed on the ground, catching everyone's attention as Yang hopped off. "Bowser! I need to ask ya something."

"You came at a bad time… but what is it?" Bowser asked.

"Okay, so this is gonna sound absolutely crazy, but… do you have a sister?" She asked as Bowsette perked up from the cake that was cutting.

Bowser raised an eyebrow. "Where's this coming from?"

"Because I overheard Iggy calling you "Uncle Bowser" while he was talking with the Inklings a few weeks ago."

"You did WHAT?" Iggy said in surprise. "Agh, I thought for sure no one was around!"

Bowser snorted and then let out a chuckle. "In case if you want to know… my sister is over there!" He said as Yang turned her head and saw Bowsette who turned to look at her.

"…Peach?"

"Oh for the love of… do I look like Peach to you?"

Yang's eyes widened. That's definitely not her voice. She thought. "Uh… sorry about that!"

"Oi… I'm gonna have to dye my hair once this party is over." Bowsette muttered. "So, who's the blondie?"

"The name's Yang Xiao Long!" Yang grinned. "And if you happen to be Bowser's sister… which, by the way, what is your name?"

"Bowsette."

Holy crap, Ruby was right? "Well, Bowsette… if you just so happen to be Bowser's sister…" She smirked.

"…Oh boy." Marnie said, knowing exactly where this is headed.

"Oh, you wish to challenge me to a fight, eh?" Bowsette smirked, getting in a fighting stance. "Well now, I'm not one to back down from a challenge, blondie!" She said, cracking her neck and her knuckles. "Bring it on then!"

Heh, this is gonna be fun. Yang smirked, cocking her gauntlets as the Zapdos wandered over to the refreshments.

Bowsette let out a chuckle. "Haven't had a good fight in a long time." She smirked, steam coming out of her nose, rolling her shoulder. "Don't disappoint me."

"Oh, I won't!" Yang bounced on her feet as she got in her stance, as did Bowsette.

A Lakitu got between the women. "Alright… let's have a good fight!" He said as he raised a flag up in the air. "Ready… BEGIN!"

BGM: Never Let Up! (Mario and Luigi: Dream Team)

Spunky Koopa Gal - Bowsette

Both of them rushed at each other, as Yang delivered the first punch and socked her in the gut. Bowsette would respond by delivering a swift round house kick to knock Yang back a few feet. Yang would recover, but then saw Bowsette already at her face and then delivered an uppercut to her chin. Nnngh! She's fast! She thought as she was up in the air as Bowsette jumped up and axe kicked her to the ground.

Yang slammed into the ground but then got back up, blue aura surrounding her hands. "HADOKEN!" She yelled, but Bowsette stepped out of the way as she rushed over and did a flying knee kick, hitting her straight in the gut as Yang hunched over as Bowsette then flip kicked her to make her step back a few feet. Yang shook it off as she rushed at Bowsette, as the former breathed fire at her as she let out a gasp and then slid under the fire breath as she delivered a kick to the knee and then slugged her in the gut a few times as she delivered a shoryuken that knocked Bowsette in the air.

Yang smirked as she launched herself up in the air to try and punch Bowsette down, but the latter would conjure up a fireball in her hand and threw it at Yang. "Huh?!" She said, having no time to dodge as she got hit where both of them would land on the ground as both of them ran over and would would try to punch each other in the face, but Bowsette was faster and knocked Yang sideways as Yang would then jump back and fires her gauntlets to try and hit her but Bowsette would swiftly dodge the bullets flying toward her as she jumped over as her fist caught ablaze and punched her, but Yang would jump back and throw another Hadoken at her, but Bowsette would swing her arm and deflected it with her arm.

She deflected it like it was nothing?! Yang thought as Bowsette got in a stance and let out a hearty roar, as everyone would see an image of what Bowsette used to look like behind the Human/Koopa hybrid. It was enough to stun Yang as Bowsette rushed over and delivered a nasty fire punch to her gut hard enough to have Yang's aura dissipate as she went flying and slammed into a wall to knock her down.

"Ooooh!" Everyone winced.

End BGM

"Heh, still got it." Bowsette said as she walked over to Yang who was slowly getting up as she offered her hand. "Hell of a fight, girl."

"Y-yeah…" Yang let out a chuckle, taking Bowsette's hand and pulling her up."Ya know… when I pictured Bowser having a sister, I wasn't expecting-"

"Me being a human?"

"Yeah."

"It's a long story."

Yang smirked, folding her arms. "Try me."


Meanwhile, with Claude

BGM: Monastery Theme (Fire Emblem: Three Houses)

"So, who's this?" Hilda asked as they were in the cafeteria.

"Oh this? This is Apollo." Claude said.

"Pew!"

"Aw, he's a cutie!" Hilda said.

"Yup. As a matter of fact… I'm the father and Yang is the mother."

"WHAT?!" Hilda yelled right as Lystihea took a bite of cake, causing her to choke on it in surprise.

"Mmmph…! Mmmmph!" Lysithea held her neck as she quickly grabbed a glass of water and drank it down. "Haaah… your WHAT?!"

"Goodness, I didn't think you and Yang were that far in your relationship!" Leonie said.

"Pffft! Nah, we're not there. We just adopted him after a Solgaleo kicked the bucket."

"What's… a Solgaleo…?" Marianne asked quietly.

"So Yang adopted the little guy and he took a liking to you?" Raphael asked.

"Yup." Claude said as Apollo happily helped himself to some steak.

"You know what I think!" Hilda said. "I say we spoil the honorary Golden Deer rotten! I'll make the perfect aunt! …Ignatz, go and make a cute little outfit for the little guy!"

"Aaaand there it is." Ignatz muttered.

"What? Sewing is boring… plus, it's work…"

"I think I'll make the perfect uncle! Hahaha!" Raphael laughed.

"I think we'll all make perfect aunts and uncles." Lorenz said. "…Except for Hilda, she'll be the lazy one."

"I'm RIGHT here!"

Claude let out a chuckle. Well now, Yang's gonna be in for a surprise. He thought with a chuckle.

End BGM


Back at Bowser's Castle…

"Dang… that's a hell of a life you had." Yang said, sitting down on a chair.

"Yeah, luckily Rei finally managed to get me to see that not everyone thinks of me as a freak."

"So… this Rei girl… is she a-"

"Human/Boo hybrid, yeah. She's got all the perks of being a Boo."

"Does that include… ya know… unable to look at people?"

"I never said they were all good perks." Bowsette said. "She's shy, but once she gets to know you, she's actually quite sweet."

"Does she go by Boosette or Rei?"

"It… it doesn't really matter that m-much…" Boosette quietly said as she was nearby. "Y-you can ca-call me either or… I… I won't mind…"

"She definitely prefers being called Boosette, but as she gets to know you, she wouldn't mind being called by her actual name, though she wouldn't mind still being called Boosette either."

Curse my crippling shynessshe's being my voice again… gah, why did I have to inherit the Boo's major weakness!

"Another question about her… does she fight?" Yang asked.

"I… I'm not much of a f-fighter… I h-have my Will-o-wisps…" She said, conjuring up blue orbs. "B-but… th-that's abou-… aaaagh!" Boosette covered her face again. "Sorry! I don't mean to be rude!"

"No no no, it's fine!" Yang said and then turned to Bowsette. "So… considering you're gonna be around a lot more… does that mean you're gonna help kidnap Peach?"

"Nah, kidnapping's not my thing. I'll let Bowser take care of it… though, it won't stop me from helping him out, kind of like that punk girl over there."

"Marnie? She usually helps us out though."

"Really? Heh, more power to her, I guess." Bowsette shrugged.


With Marnie

"…Wait, did I just hear her right? She called me a punk?" She said as her eyes sparkled. "Yes! Finally… someone who understands me!" She said.

"See? Told you someone would call you for who you truly are." Neo signed with a wink.

"Yeah." Marnie nodded.


Back with the women

"Team RWBY, huh… sounds interesting." Bowsette mused. "And you typically fight my bro?"

"Yup."

"Heh, well, glad you guys keep him on your toes." She said with a chuckle.

"Oh, that reminds me…" Yang pulled out her scroll. "Gotta take a picture of this and send it to my team and-"

"Oh, I got a better idea." Bowsette said, taking her scroll and took a selfie. "Now let's see… Ruby, Weiss and Blake, right?"

"Yup!"

"Oh, I'm gonna have fun with this." She smirked and started typing up a message before pressing send.

Hey, the name's Bowsette and I kidnapped Yang and her little phone. You want to get her back? Come to Bowser's Castle. I'll be waiting.

WHAT?! YOU KIDNAPPED MY SISTER?! - Ruby

That's unacceptable! - Blake

Hang on, Yang. We're coming! - Weiss

"Heh, suckers." Bowsette said, tossing it to Yang as she read the message and burst out laughing.

"That's a good one!"

"Hey, I'm the life of the party!" Bowsette grinned with a chuckle.

"You and your pranks…" Boosette shook her head with a giggle.


A few minutes later

The whole Koopa Troop heard a loud roar in the distance. "Oh, Weiss brought Azure over." Yang said with a chuckle.

"Sheeeeiiiiighhhed!"

In an instant, Blake came running in while riding on Spectrier as Azure landed where Ruby and Weiss hopped off. "Don't worry sis, we're here to… save… you…?" Ruby blinked, seeing Yang happily eating some ice cream.

"Oh hey, my heroes came to save me." Yang grinned.

"Wh-… huh…? How did… wha…?" Weiss tilted her head.

"Ah, so this is the famous Team RWBY I've heard from Yang." Bowsette said. "Nice to meet ya!"

"Wait, this is Bowsette?" Blake asked.

"Yup. Bowsette, this is Ruby, Weiss and Blake. Guys… this is Bowser's sister."

"Sup."

"SISTER?!" Blake yelled.

"She's a human?!" Weiss said in surprise.

"I was right?! …Uh, I mean, of course I'm right! I'm a genius!" Ruby said proudly, earning a smack upside the head from Weiss. "D'oh!"

"Basically, long story short, she used to be a big muscle-y Koopa like Bowser, and she went to get a smaller snout via plastic surgery… and wouldn't you know it, she got turned into a human/Koopa hybrid."

"Hmm… ah!" Ruby pounded her fist into her palm. "Technically, she did get a smaller snout… but she got more what she bargained for."

"Th-that's what I said…" Boosette shyly giggled.

Bowsette burst out laughing. "Oh, I like the red head already. I didn't really kidnap your friend… she came over to ask my bro a question and lo and behold, here I was. Had a friendly spar too. Then after that, Yang was gonna tell you guys about me, but I decided to have a little fun instead."

"So… you didn't kidnap her." Weiss said.

"Pffft! Do I look like the kidnapping type?"

"Then what was all that about?!"

"To lure you guys here so I can get a closer look at ya." Bowsette grinned.

RWB sweatdropped. "Oookay then…" Blake said.

"Alright, now that you're here, let's have ourselves a hell of a party!" She said as she got up and happily walked over to the refreshments. "Ooooh, is that Rocky Road?"

"…What did we just get ourselves into?" Weiss asked.

"A party, duh!" Yang grinned.

"A welcoming party at that." Bowser said as he started pushing them. "Go on, enjoy yourselves! I'll cook up a scheme later!"

"…Well, why not?" Ruby shrugged.

"I mean, I guess it wouldn't hur-" Blake immediately spotted some fried Cheep Cheep. "…Let's stay as long as we like!" She said, drooling at the sight as she immediately ran over to the fish. "Out of my way, Ice Bro!"

"Wah!"

"So… I guess things are gonna be a bit more interesting the next time we go and save Peach?" Weiss asked.

"Pretty much." Yang nodded. "I think we oughta warn the Bros and Daisy though… oh, and Peach too."

"I was thinking the same thing." Ruby agreed, all of them unaware of Roy who was folding his arms in annoyance in the distance.

"All of them are buying into it… ugh, I'm surrounded by idiots…" Roy grumbled and walked off in a huff while everyone else, especially Bowsette and Boosette, enjoyed themselves.


As I always wanted to bring Bowsette (and Boosette) into this series, I began to think "How am I ever going to incorporate those two in this universe..." and just about a few weeks ago, I thought "...Wait, what if instead of having Bowser wear a Super Crown to become Bowsette... what if we had Bowser had a long lost twin sister that he never really talks about?" and it, well, say it with me now, snowballed from there! Then I was immediately hit with inspiration with Bowsette and Boosette's backstory and the rest is history!

I wonder if there are any other fics out there that has this type of concept with Bowsette...