Kyle, Kairung, and Kaice are nearby a move theater with a movie poster saying

Super RWBY Sisters, a Mario + RWBY Crossover fanfic by Nan the Keyblade.

RWBY, JNPR, Pit, the Mario Bros, Daisy, Inkling Girl and Xena came over. Ruby greeted "heya!" Kairung replies, "Howdy!" And Kaice reply as he did a Japanese bow, "Glad to see you here." Ren greeted him the same way.

"Glad we could join ya!" Daisy said. Kairung smiles and greeted, "Thank you now then..."

Kairung and Nora exclaimed, "Let's get this movie started!" The group went to the movie room with Pit near Team RWBY (hmm, Wonder why?😘) and Team JNPR on the other side. Daisy is with Luigi and Mario, mostly Luigi. Xenia and Inkling girl are on the other side while Kyle, Kairung, and Kaice are taking the back seat.


Chapter 1: Strange Creatures
BGM: Bowser's Castle (Paper Mario: The Thousand Year Door)

A hand popped out of a river of lava and then a head came out, then it proceeded to swim in the lava until it found something to get out of the lava and then pulled itself out.

It turned out to be a turtle… but this was no ordinary turtle.

Kairung remarks, "That guy doesn't know how to quit!"

Oh no, this turtle was none other than King Bowser Koopa… and he didn't look very happy either.

"Those blasted plumbers!" Bowser growled, punching a wall in frustration. "No matter what I do, they always manages to defeat me and rescue the princess!" He exclaimed, walking through his castle in anger. "There has to be SOMETHING that I can do."

Kairung add, "I would say he is steamed up but he looks like he just got burned!"

"Oh sure, he gets out of the lava all fine, but when we get in water, we practically melt!" Inkling Girl grumbled. "Takes us a while to repair ourselves too."

Kaice replies, "Cause lava is part of his environment while you inklings seem to have a unstable composition structure."

"Yeah... you're right." Inkling Girl sighed as she slumps down with a rain cloud over her head.

"How about kidnapping Mario and Luigi instead?" A voice asked as he turned to see Kamek approaching him.

"Yeah right…" Bowser muttered. "If I do that while kidnapping those loud mouthed mushrooms, I have a sneaking suspicion Peach will come over and whack me in the head with a talking umbrella."

"Oddly specific..." Weiss said. Kaice replies, "No kid."

Kamek raised an eyebrow. "That seems… oddly specific. Did you dream that up, Your Nastiness?"

Nora asks Weiss as the white mage blush, "How did you do that!?"

"Hey, it could happen." Bowser said as they wandered around the castle, looking at the Medical team healing the wounded. "I just don't understand how I'll be able to successfully get Peach to myself without getting my tail thrown in the lava."

"Perhaps we can kidnap Peach, and then set up a trap to destroy the Mario Bros."

"A trap to destroy them… that could work… IF THEY CAN STOP CHEATING DEATH FOR ONCE!"

Almost all of the audience look at the Mario Bros with surprised or stunned faces while the brothers look bashful. "What?" Mario rubbed his head while Daisy let out a giggle.

Kamek sighed. "Hmm… then what can we do?"

"Your guess is as good as mine." Bowser muttered.

"Your Ugliness!" A voice called up and then they saw a Hammer Bro running up to them. "You're not going to believe this…"

"What, the Mushroom Kingdom is surrendering?"

The audience snorted as Kyle, Mario, and Kairung reply, "In your dreams!"

"Well, no."

"Pfft, Mushroom Kingdom surrendering... good one." Daisy rolled her eyes.

"Peach is giving up herself to me?"

"Heck/Hell "No. (!)""

"There's some angry blue guy with terrible aim?"

"Are they talking about Church?" Pit asks "Probably Church." Nora and Yang said together.

"Not that either."

"Then what is it?"

"You might want to take a look at this." He said as he took off as Bowser and Kamek followed them up to a walkway just outside of the castle. "Shy Guy! Would you mind?"

"Certainly." Shy Guy backed up as Hammer Bro took a look in the binoculars.

"Yep… it's still there." He said, and then giving it to Bowser.

"…What am I supposed to look at? It's just a Wiggler."

"No no no, not the Wiggler. Look up a little."

Bower turned his gaze from the Wiggler and noticed a strange creature bothering a few Hammer Bros and Boomerang Bros. "What in the name of the Bowser Kingdom is that? Did the Mushroom Kingdom send that to add salt to the wound?"

Mario scoffs, "As if!" "Don't think we would've have done that..." Luigi sweatdropped.

"I honestly doubt it. It doesn't look like it came from the Mushroom Kingdom."

"So… Sarasaland?"

Daisy was not amused.

"Nope."

"Then what is it, a mutated Yoshi?"

Luigi stiffs as he spoke, "Please Grimm are bad enough but a Grimm Yoshi?!"

"Doesn't look like one."

"THEN WHAT IS IT?!"

That what I want to know!" Kairung exclaims. 'Definitely a Grimm.' Xena thought to herself.

"It's called a Grimm." A female voice said as they turned to the source and saw a woman who was currently in shadow. "That particular Grimm is called a Beowolf."

"Two questions… no… three. One: What's a Grimm? Two: How did you get here? And Three: Who are you?"

"A Grimm is basically a creature, best described as 'Creatures of Destruction' and lack a soul. They're drawn to feelings of negativity such as envy, sadness, loneliness… and hatred."

"So basically a wimpy form of the Darkhearts (oc enemies)." Kyle summaries. "Dark what now?" Ruby and Pit asked as they heard a chuckle from Kairung.

Kyle get his bag as he search though it until he found what he is looking for. He then lifts up a dark purple book with a nasty monstrous heart with evil eyes and teeth. He then reads.
"Here a guide to creatures, a race of living darkness, they are more ruthless than bandits, stronger than steel, faster than lighting, wicked enough to rival demons, stealthy as a true hunters they are. They are the Darkhearts, beast of the dark, shadow predators, and the only thing that the Heartless truly fears fully. For they are dark beasts filled to the brim with darkness than any other species alive or dead, can shape shift into many shapes. And there are many of them yet few are found in the light realm for they live in the darkest places away from burning light for they turn to dust when they are in light too long without sunscreen of strongest kind, if they in realm of light they are always on the move in the shadows, few have seen them...and live to tell the tale. Their beginnings are beyond the first days of writing and cave art. Which is annoying for anyone who wants to research their history and their history is in the shadows of all history, but never the complete picture of their true form.

Their diet varies across many food sources. Thus many ways to hunt their prey. To the heartless to beings of light, to soul to flesh, they'll feast n' devour anything they can get in their bodies. Petty freaky huh? Also they are many classes of them."

"Oh dang..." Nora could only say while the others were speechless. Kairung merely smirks as he spoke, "We spent quite a few years fighting them in our travels with ghost panther, a gorillia the size of a mountain to 4 really strong Darkheart lords called the horsemen of doomsday."

Kyle puts the book back as he spoke, "Enough talk about our enemies, Well let's focus on the movie okay?"

"Right." Daisy nodded as they resumed watching the movie.

"Given as how King Bowser hates Mario so much, I can see why it was attracted here." Hammer Bro said.

"Maybe…" Bowser rubbed his chin in thought.

"Oh no, I don't like that look." Kyle replies.

The woman smirked. "There are more creatures of Grimm besides the Beowolf."

"Okay, and my second question."

"It was simple, we let ourselves in." She said, joined by two other figures that was covered in the shadows as well.

"Okay, do they have some kind of camouflage suit?!" Kairung shouted. "They always like to hide in the shadows... I don't know why villains do this." Ruby shrugged.

"One is to make them edgy, two is hide their identity, and three is to they got bigger plans in store." Kairung listed like a pro due to being in a land of manipulation and deception. "That makes sense..." Ruby nodded.

"You just… waltzed in?" Hammer Bro asked.
"Why do I have a feeling that she was swaying her hips and dancing like she owns the place." Kairung grumbles. Kaice whacks him on the head for his bluntness.

"Yes."

"Without triggering the alarms?"

"It was destroyed when we walked in."

"Blasted plumber…" Bowser growled. "So… my third question."

Mario let out a chuckle, having a cocky smirk on his face.

"Our names are of no importance… for now."

"Drama hogs!" Kairung and Kyle shouted as Kaice did a eye roll. Ruby, Pit, and Yang snigger.

"Hmph… okay, adding another question: WHERE did you come from?"

"We come from a land known as Remnant. It seems as if your hatred was so strong it attracted the attention of the Grimm. This got us curious so we followed them until we came across this amazing castle. I assume you're the owner."

Kyle said, "Well dah!?"

"No, it'd be the Hammer Bro... OF COURSE IT'S BOWSER!" Daisy said.

"Damn right! I'm Bowser Koopa, the King of Awesomeness!"

Everyone rolls their eyes at this.

"I see…" The woman slightly grinned. "You know, I think I have a solution to your problem."

"And what is it?"

"Oh no" Kairung moans as Kaice rolls his eyes, "I hear evil scheme..."

"We use them." The woman chuckled darkly as Bowser turned to the Beowolf who looked up at Bowser.

"And let me guess, you fail using them." Inkling Girl rolled her eyes. "But not the mastermind behind it." Kairung pips as he knows this is just another step in an evil plan.

"And how are we going to use a single Grimm creature?"

The woman smirked. "Oh, I have my ways."

End BGM


Meanwhile, at Peach's castle…

BGM: Peach's Castle (Super Mario 64/DS)

"Oh, Mario! Luigi! I'm so happy that you saved me!" Peach exclaimed happily.

"Ah, it was no trouble at all!" Mario smiled.

"Bowser's always been a pushover, so it was easy." Luigi said.

"Bet you 10 that Bowser would burn them if he heard that." Kairung said to Kaice who said, "I bet 20 if he sits on them. The Mario Bros chuckled, not hearing the two as they fist bumped each other.

"Right." Mario nodded.

Peach giggled and then thought of something. "Would you boys like some cake?" She asked, and all she got were smiles, which meant 'yes'. "Alright, I'll go make a cake for all of us to enjoy!"

Kairung and Kyle tried to not drool as their stomachs grumbling before they eat more food.

"Wahoo!" Mario and Luigi exclaimed as Peach walked into the kitchen while the two plumbers were talking while high fiving each other as Toadsworth and Toad came over and started chatting with them as well.
"What's with you boys and cake?" Daisy teased."She makes some good cake." Mario chuckled.
"Can't argue with that." Daisy nodded.


About an hour later…

Peach came out with the cake, humming to herself. "Okay, the cake is ready~!" She said in a sing songy voice as they proceeded to come over to her as she put it down on the table, then she pulled out a knife.

However, just when the knife barely touched the cake, there was an explosion that startled all of them… and then another explosion.

"You can't bake a cake and eat it without someone interrupting you, Can you?" Kairung replies as Kyle sighs in agreement. "Sadly..." Mario sighed while Luigi rubbed his head in embarrassment.

End BGM

BGM: Bowser Jr's Airship Armada (Super Mario Galaxy)

"Stay there, we'll go check it out!" Mario ordered.

"Okay." Peach nodded as the Mario Bros took off with their hammers out while Toad and Toadsworth found a place to hide.

The Mario Bros ran out the door and saw Bowser's airships in the air and then Bowser was on top of one. "Long time no see, plumbers!"

"Bowser! Back so soon?" Mario asked.

"If I know any better, I think that he asking for more, considering the glutton he is." Kairung remarks as Kyle laughs. The Bros laughed with them. Ruby and Pit snickers as they lean against each other.

"This time, I have the upper hand." Bowser smirked.

"Should that be the upper claw?" Kairung asked.

"Oh yeah? Prove it." Luigi ordered.

Kaice shook his head, "You should not say that."

"Gladly." Bowser chuckled as he folded his arms and did nothing… but then suddenly they heard windows shattering and Peach screaming in terror.

"Peach!" Mario exclaimed as he and Luigi quickly ran back in while Bowser chuckled darkly.

As soon as they ran in, they saw a few Beowolves in the room and one of them is holding Peach in its arms. "Mama mia! What are those?!" Luigi exclaimed.
"Mangy mutts, that's what!" Kairung exclaims."Me and my big mouth..." Luigi sighed. Daisy patted him on the shoulder. "It's alright, sweetie. We still love ya."

"It doesn't matter… we'll defeat them!"
"Wait for it." Kairung piped

"I wouldn't be so sure of that." A voice said as they looked over to see the same woman that Bowser spoke to leaning on a wall. "Are you really sure that you'll defeat them without risking your dear princess's life?" She asked, nodding at a Beowolf as it raised its claws, aiming directly at Peach's chest. "If you take one small move, your princess dies." She threatened.

"Hostage situation!" Kyle remarks.

Their eyes widened. "No…!" Luigi exclaimed.

"Oh yes." The woman smirked. "So, what will it be? Your surrender… or her life?" She asked.

Something tell me that she is ruthless but from what?" Kairung asks.

"Who knows..." Inkling Girl shrugged with Xena.

Kairung suggested, "An heartbroken madwoman?"

"Hmm... probably?" Yang shrugged.

Mario hesitated, wanting to save Peach once again, but he didn't know what these things were or how fast they would be to kill Peach.

"Mario, what do we do?!" Luigi asked.

Mario clenched his fists… he didn't like what he was doing and then he dropped the hammer, much to Luigi's surprise.

"Just don't hurt her." He said.

"Oh don't worry; we'll take very good care of her." She smirked, snapping her fingers as the Beowolf lowered its arm.

"M-Mario…?!"

"Mario…" Peach had tears running down her cheeks.

"I'll get you out of this situation… somehow, I will!"

"Oh, but you won't do that." The woman smirked. "For you two will be joining the princess." She said as Mario and Luigi's eyes widened… and then their necks were karate chopped by Bowser as he then picked them up.

"Should seen that coming! Really who knew that Koopa knows karate?" Kairung remarks. "That still stings a bit..." Luigi said, rubbing the back of his neck.

"MARIO! LUIGI!"

"Well, that was incredibly easy." Bowser chuckled. "Why didn't I think of this sooner?"

The woman chuckled. "It's a good thing we came."

"Yes. Koopa Troop, let's move!" Bowser ordered as they guided the princess and the unconscious bros into the airships while a Beowolf looked at the cake and sniffed it, licking it before giving a disgusted look and raised its fist… and then smashed the cake along with a Mario and Luigi figure on top of it, splattering frosting everywhere as it went back… completely covered in pink, but it didn't seem to mind.

"Noooooo!" Kairung and Kyle screams.
"The Poor cake, never gotten a bite..." Kairung wept. Then straight faced, they did a moment of silence for the fallen cake. Then they got angry as killing intent flooded the room before vanishing in a minute. Others stared at them before swearing that they don't press their button. But then Kyle and Kairung cooled down.

"So, what next?" Hammer Bro asked.

"We celebrate… and then we take over the Mushroom Kingdom." Bowser smirked and then they all flew off back to Bowser's Kingdom together.

Kairung spoke to Weiss, "Bet you 20 Lien they do a conga line with the Grimm."

"I'll take that bet." Weiss smirked. Kaice sighs softly as he knows that Kairung is good pal of Deadpool due to their matching personalities. But Kairung controls his chaotic tendencies a bit better.

End BGM


Meanwhile, at Beacon…

"Ugh… bored…!" Ruby groaned as she was on top of her bed with the rest of her team. "Someone entertain me!" She requested while also petting Zwei in the process.

"We know the pain..." Kyle and Kairung replies with sympathy.

"Well, there's not much we can do." Yang said. "It's not like we're going to get called to a mission or anything…"

"You spoke too soon, speak of fate and it will appear." Kairung answers. "Heheh..." Yang chuckled.

"I wish we did… then Ruby can stop complaining about being bored!" Weiss complained.

"Hmm…" Blake rubbed her chin in thought and then there was a knock on the door as Yang went over to open it, and then saw Professor Ozpin on the other side.
And here's Destiny calling." Kairung quips. "Destiny awaits." Daisy chuckled.

"Professor Ozpin?" Yang asked.

"You four. Come with me." He requested as the four looked at each other and followed him to his office.

"So, what's the situation?" Ruby asked.

"You all handle Grimm exceptionally well… except, that there's been an unusual amount of Grimm outside of our land."

"Hmmm, wonder why. A wannabe overlady want allies as cover and muscle?" Kairung accurately guess. "Pfft, good one." Inkling Girl chuckled.

"So… you want us to investigate it? Why did the Grimm go there?" Blake asked.

"It's because of the massive amounts of negativity in one part of the land and it has spread throughout the kingdom." "Wonder who?" Kairung said sarcastically.

"It's a kingdom?" Weiss asked.
"Remnant does have 4 Kingdoms, why are you asking that?" Kaice questions Weiss. Weiss blushed. "I have... no idea why I asked that."

"Indeed. It is called the Mushroom Kingdom." Ozpin said, motioning them to get close and then once they did, he pushed a button.

"It what seems to be the most catastrophic moment in history, a faraway land known as the Mushroom Kingdom has been under attack by the Grimm. What caused this catastrophe is currently under investigation."

"Not with all of your efforts, oh careless one." Kairung mutters under his breath as he remembers that Ozpin lost to him in a secret gambler game named Warrior's Way as Kairung maybe or not cheated. Hey, Oz's fault that he didn't check the coding, Ozpin is not tech wiz which proved to be his undoing in that game. Kairung was smiling that night.

"…Oh great, it's a kingdom full of mushrooms… gross." Weiss muttered.
Weiss then hears coughs of demand of attention from the natives. Weiss felt Mario and Luigi staring at her. "I... uh... I changed, alright?" The Bros nodded with a glare on her head as she sweats. Kairung jests at Weiss, "Oh please at least it is not a world where ninjas are various levels of danger."

"Whatever seemed to cause it, the Grimm have been spotted all over the place and the population seems to be growing."

"Like bad weeds!" Kairung quipped.

"I see…" Yang rubbed her chin in thought. "You want us to go over there and save the residents."

"And cut down the Grimm population. They are Grimmly bad for business." Kairung jested as Kyle and Kaice facepalm. "Ugh... and I thought Yang's puns were bad." Blake groaned. "That was just squiddy..." Inkling Girl said.

"Yes… and seeing as how much it's growing, you probably won't be back for a very long time."

"Oh no matter, we can take down the Grimm easily!" Ruby said.

Pit complements her as he leans on her, "I believe that." Ruby blushes while he gently kiss her. "Aww, thank you." Ruby giggled.

Ozpin chuckled. "Indeed. Now, you know your mission. Go out and save the Mushroom Kingdom." He ordered as they saluted and took off.


A few minutes later…

"Ruby! Come on, let's go!" Yang exclaimed as Ruby went in the plane.

"Sorry, I had to say goodbye to Zwei and have Jaune look after him. Oooh, I'll miss him so much!" Ruby said.

"Relax, it's Jaune. How bad can he screw up over looking one dog? Besides, he's got Pyrrha, Nora and Ren." Blake said.
Famous last words." Kairung mutter.

"Right." Ruby nodded and then, they headed off for the Mushroom Kingdom.


To be continued...


"That is interesting, who was that villainess?"