A/N Above are some quick new updated designs of Dusuu and Nooroo (because they're my favorite I'm sorry I won't shut up about them) Idk if I'll update the rest of the kwamis because...... I do not care lol. You had Tikki and Plagg and now these two (but if there's a kwami you really wanna see updates just ask and I'll redraw them). 

Also NOOROO WAS BEING A PROBLEMATIC LITTLE SHIT. I spent the last three chapters trying to upload him. Dusuu would always load perfectly. He's just so cooperative (not canon lmao) but NOOROO?! Little fucker kept having file issues on wattpad even tho HE'S THE EXACT SAME FILE TYPE AS DUSUU. So I said fuck it and uploaded him from my phone (still same file type wow) and it worked but it reduced the image quality of him. So Dusuu, rewarded for being the best boy, gets a high quality image and Nooroo can be a clump of pixels for all I care.

I APOLOGIZE FOR THE LAST CHAPTER IT WAS SO BAD. There's a couple chapters in this fic that I've declared my worst example of writing and that one is one of them now. 

To make up for it I'm posting this chapter early so you can pls pls pls forgive me for that previous abomination. I ruined Alya's side plot with that one god damn it. UNFORTUNATELY I'M STILL A TERRIBLE AUTHOR I'M SO SORRY GUYS. This chapter is literally mostly fluff (plot fluff tho and not even romance fluff, just friendships being cute and funny) (stuff does happen tho, the team is bonding here, and making discoveries about the miraculous, so it's not pointless or filler I swear) (I would tell you if it was filler) 

Toothbrush hanging out of mouth, pajama bottoms barely on, Nino wandered from the bathroom to his bedroom to put away his glasses when he suddenly was consumed by an ethereal green light that startled him so bad he spat out his brush. The brush hit the wall, which left a splat of toothpaste foam. His eyes widened when he saw not just Tigre Rouge, but also Ladybug, Chat Noir and some new turquoise hero observing him from the living room. He instinctively went to pull his pants up but there were no pants to pull. He nearly had a heart attack, thinking he was naked. He then realized he was miraculously in his hero costume.

"Uh..." now Carapace, Nino bent down and picked his unfortunate toothbrush off the floor, "how did you get in here...?"

"Kaalki," Ladybug answered.

"Uh huh..."

"You have some explaining to do," Chat Noir said, gruffly pulling the unfamiliar turquoise hero forward. "You released another kwami?!"

"Uh.......... You aren't supposed to be here."

"We know that. Kaalki teleported us here, the kwamis blacked out all the windows. We have no idea where this is, we won't be able to find it again if we tried," Tigre Rouge assured.

"I see you met the new holder of the snake..." Carapace murmured, "...who I also haven't met yet."

"You can't trust a kwami as powerful as Sass out here!" Ladybug exclaimed.

"Hello," the snake hero said weakly.

"Christ," Carapace pinched the bridge of his nose. He went back in the bathroom to spit out the toothpaste in his mouth and dispose of the brush. When he re-emerged he had an explanation ready. "You guys looked like you were on the brink of death, getting dragged from fight to fight every day. I'm letting the snake out temporarily so you can catch a break. It's not fair that it's just the two of you."

"There is no way you actually got Sass willing to do this," Ladybug declared.

"I'm more surprised than you. That guy has a stick up his ass."

The mysterious snake wielder snorted at Carapace's comment.

"What's your name, snake guy?" Carapace asked.

"Viperion," he answered.

"How many identities do you know already," Carapace said, pinching the bridge of his nose again.

"Just one," Viperion said.

"You know our identities?! Already?!" Ladybug gasped.

"By nature of how his powers work, he's bound to figure it out," Carapace said.

"Carapace, this is the single dumbest thing you've ever done!" Ladybug said, storming up to him. She glared at him but eventually softened. Then, she hugged him. "We've missed you though."

"I missed you guys too," Carapace said, returning the hug.

"He saw me without my mask, apparently," Tigre said.

"Time looping," Viperion said, "in your first reality you immediately caved and gave up the tiger miraculous to Volpina. I saw that and had to undo it. I still remember it, but you don't."

"So we both know her identity now," Carapace sighed, "which means Rena... It's not likely you'll be back on the team if we get the fox back quickly."

"What?!" Tigre exclaimed, "why did you let out the snake then if you knew this would happen!?"

"Hey um– to be fair–" Chat Noir began to admit, "someone knows my identity too."

"WHAT?!" the all exclaimed.

"Queen Bee! And she's keeping it secret!"

"Chloe fucking Bourgeois knows the identity of CHAT NOIR?!" Tigre exclaimed in utter shock, "Chat?! What the fuck?! She's not gonna keep that secret!"

"Trust me! She will!" Chat Noir exclaimed.

"This is such a mess," Carapace groaned. Some of the kwamis were poking their heads in the hallway and Carapace quickly dismissed them, "Listen uh... you can't be here."

"Carapace, we needed to talk," Ladybug said, "you let a potentially dangerous kwami out. I appreciate the help, don't get me wrong. We would have lost the tiger if not for Viperion but still. And you knew our identities were at risk from this?"

"I didn't realize that until today. I sent the snake out last night," Carapace sighed, "if you reject him, then fine. He can just hand his bracelet to me now and we'll be fine. But I really think you should just give hima few weeks so you guys don't burnout. I mean, Paris is at stake if you mentally just collapse so... I don't know what I'm doing. I'm a shit master of the Miracle Box. Sass had one request for me while he was gone and I can't even scratch the surface of it. I lost Orikko immediately, and now the kwamis are at war with me and each other debating on bringing her back or not because that Roosterbold guy is both a savior and a huge fucking problem. I don't really... know what I'm doing, but I'm trying."

"Hey, it's okay," Tigre assured, "it's a heavy burden you're carrying and we thank you for it. We'd be lost without you."

"What did Sass want you to do?" Chat Noir asked.

"Nothing, nothin–" Carapace's eyes widened with an idea, "wait! You're here! Perfect!"

"Huh–"

He immediately proceeded to explain the concept of powering up the miraculous momentarily. He went and fetched the notebook which he'd spent that entire day translating from mandarin to french with the help of the kwamis and showed them the discoveries within. He explained the issues and complications with powering up, and the potential danger of stretching the discoveries to an extent.

"But it's so much easier if we have Viperion!" Carapace explained, "if something goes wrong in the testing he can just revert it!"

"If it was that easy then why didn't Sass just do that with the original master attempting this?" Ladybug asked.

"Kwami's powers are way too powerful and might have repercussions. He hate's using his because of that so that's likely why. But with Viperion, there IS no consequence!"

"I see," Ladybug hummed, holding the notebook in her hand and flipping through the pages, "but I want to see if it works."

"The old master didn't get far in his research. Some things worked for some but had consequences for others. It's very delicate so there are only complete solutions for a select few power ups, and most of them are for the mouse. But I think... I may be able to show you an example of one," Carapace explained.

He took the notebook from her hands. Flipping through the pages, he navigated to the section studying the turtle. The turtle only had one complete solution for a power up, which would give him the ability to endure extreme heat. He read through it. Seeing the bizarre concoction it required, he hollered for the goat kwami of passion, Ziggy, who possessed the ability to create things through a power called genesis.

"Everyone, this is Ziggy. She's the kwami of the goat," Carapace explained as the jovial kwami joined them in the room. "Ziggy, can you create the ingredients for this?"

"Are you sure you want... that one?" Ziggy quizzed.

"I want to see if it actually works," Carapace affirmed.

"Alright then," Ziggy said, summoning her power of genesis. The wares required for the solution materialized in her hands and she passed them to Carapace carefully. Carapace brought them to the kitchen–which was also the living room–and got to work. The heroes and Ziggy curiously crowded around the kitchen, watching him work.

"It has to cool really fast," Carapace said, sticking the slimy substance he just made into the freezer, "but then it should work..."

"Aren't those notes like... centuries old?" Ladybug asked.

"And translated from another language?" Chat added.

"And shouldn't you have been more careful making it? You seemed to hurried," said Tigre.

"I guess I'm here if this goes wrong but I really have no idea what's happening," Viperion said.

Giving it ten minutes in the freezer, Carapace pulled it out. The slimy substance was more solidified now. His freezer may have been powered by the deep depths of space for that to work but shush. He was still able to scoop it out in his hands. He looked at Ziggy. "Do you know if I'm supposed to like... eat this?"

"You eat it," she nodded.

"Won't it be super gross?"

"The worst taste imaginable," she nodded again.

Carapace grimaced. He dipped two fingers in and scooped some of the oddly colored, oddly smelling, oddly looking substance out. He gathered his bravery and forced it onto his tongue. He had to try not to gag, his reaction so visceral he noticed it caused Viperion to prepare his use of second chance.

His suit began to change, glowing in green. He gained a hood and a wide flat hat, airy sleeves, a skirt, and his goggles became more sealed on his face. He looked down at himself.

"I don't think this is for heat endurance," he said.

"Hmmm..." Ziggy looked at the notebook he'd pulled the solution from, "it is but it isn't. This is a sub of the heat endurance power up, which makes you more fit for fighting in the desert. You asked for a snakes eyes when I made the ingredients. Snakes eyes would make you suited for desert."

"Huh," Carapace continued to observe his new fit, "well, still, it's a power up of some sort, right"

"How would this help us?" Chat Noir asked, "no offense, cause it's cool, but I don't get it."

"What if you're fighting an akuma who turns Paris into an icy hell?" Carapace said, "you'd need a suit to accommodate for that."

"I guess so," Chat Noir shrugged.

"The problem is, the old master found nothing for the ladybug and black cat. We'll be starting from scratch, and you're the two that this is most important for."

"I see," Ladybug hummed.

"I'll continue searching for connections tonight. I'll send Kaalki to fetch you all again tomorrow, if you're free?" Carapace suggested.

"You know what, hell yeah. Cool magic science project for the win!" Chat Noir declared.

"See you tomorrow then?"

"We'll see you."

***

As promised, the next day Kaalki brought the others back the next day. Carapace had a lot to show for his studies. He figured out the similarities between solutions across all nineteen miraculous and was able to narrow them down to core elements. The easiest was the aquatic power up, which had several complete solutions across most of the nineteen.

"The mouse has almost all the known power ups," Carapace explained. He'd set up a tarp across the main room and had hoards of papers and random... things... ingredients (?)... scattered across it. "I want to start with the aquatic power up. I figured out the similarity it has for the many that possess its power up so it should be the easiest to start with."

"Have you considered that maybe the ladybug and black cat... aren't meant to have a power up?" Ladybug asked.

"Yes but that's not gonna stop me from trying to solve the puzzle," Carapace stated.

"Where do we start?"

Carefully, Carapace placed the last bronze bead into his mixing pot. Chat Noir was eagerly hovering over him, crowding in on his space. With the last bead, the liquid concoction fizzed a little. Unusual. But nothing else happened.

"It changes to the color green for all the others, so we have to be missing something," Carapace said. "Ziggy, do you know anything?"

Ziggy, who was, for some unknown reason, painting on a canvas in the corner of the room, shrugged lazily. "The goat never got an aquatic power up," she said, "I don't know much. I do know that if we get it wrong, your lungs could combust! That happened to a snake user one time!"

"Wow... delightful."

"The tiger required ribs of a tigerfish," Ziggy said, "maybe the black cat needs ribs of a catfish?"

"That's so on the nose."

"Here," she magically made fish ribs in her hand and passed them to him. Carapace sighed. He separated a small part of the brewing. He had Chat Noir grind up the ribs into a powder before adding them to the liquid. Nothing happened for a few seconds but slowly, the water faintly turned green. "I can't believe I'm making an actual potion..."

"We did it!" Chat Noir cheered. He eagerly grabbed the small glass the liquid was in and nearly drank it.

"Wait! Wait! Wait! Dumbass!" Ladybug threw herself across the counter and snatched it from his hand, "doesn't it need to be prepared first? And make sure Viperion is ready so you don't like– explode or something!"

"Let me cool it first," Carapace said, taking the glass from Ladybug's hand and setting it in the fridge.

"Aw, m'lady was worried," Chat teased. He poked Ladybug on the head. She was laying across the counter in quite the strange position and quickly rolled off of it to get away from him.

"Yeah, I don't want you to die, sherlock!"

"Viperion, we haven't secretly looped this moment right? Chat Noir didn't die just now, did he?" Tigre asked. She'd been watching Ziggy paint.

"I haven't used my powers yet," Viperion reported.

"He won't have to because this is gonna work," Chat Noir said confidently.

"I don't know..." Carapace cringed. After a few minutes, the liquid was cooled enough to give back to Chat Noir. Viperion set his checkpoint in time and they gathered around the counter, waiting for Chat to drink the glass.

Hesitantly, Chat brought it to his lips. He took a sip and gagged.

"It tastes like piss–"

"Drink it!" Ladybug said, forcing the cup back to his mouth. Almost crying, Chat Noir drank the supposed piss.

"Nothing happened..." Tigre observed.

"Do you feel... Aquatic?" Ladybug asked, "Viperion, have you looped this?"

"I haven't used my power yet," Viperion reported again.

"How do you feel?" Carapace asked.

"My tongue burns cause I think you just fed me cow piss," Chat said, sticking his tongue all yucky.

"That was one of the ingredients..."

"WHAT!?"

"I'm kidding!"

"Oh–" Chat clutched his stomach, "it burns."

"Burns?! What do you mean burns?!" Ladybug cornered him with concern.

"I don't know..."

"His stomach isn't gonna explode, is it?!" Ladybug said, putting her hand on Chat's gut (and the boy blushed from embarrassment).

"I'm not gonna die! I just feel–"

POP!

Chat Noir turned into a fish.

"Chat Noir!!!! No!!!! What have they done to you!" Ladybug said dramatically, kneeling to the floor in despair and picking up the fish that was once Chat Noir. She cradled his stupid little fish body. To be precise, he was a catfish. "Can you hear me Chat Noir? Are you in there?! Wave your fin if you are!"

The fish waved his little fin. Ladybug gasped joyously and raised the fish to the heavens in delight.

"He's alive!" she said with joy, her eyes however weepy. "My little cat boy is a fish but he is alive!"

The fish began flopping about in her hands as if to dance... Or maybe he was dying.

"I don't think he can breathe," Carapace observed.

"Water!" Ladybug said, leaping to her feet and rushing to the bathroom.

"Second chance?!" Tigre countered but Ladybug was already gone. Tigre looked at Viperion, confused, "use your power???"

"I have. Six times. He keeps fucking drinking the solution no matter what I tell him so this time I just let it happen and stayed quiet," Viperion said, sounding amused.

"Dumb cat," Tigre rolled her eyes.

Ladybug could be heard crying out joyously from the bathroom. Apparently, her hero partner turning into an actual fish was the most humorous thing in the world. None of them were sure if they'd ever seen her laugh so much, especially over something that could be considered a disaster. What if they couldn't reverse the effects of his fish form? Ladybug would probably keep him as a pet.

Then, Ladybug screamed as the effect evidently wore off and she was now dealing with Chat Noir and herself slipping in a tub and getting water everywhere.

Back at it again! Carapace altered the solution, this time more carefully. He'd never before gotten it to actually affect anything so he assumed he was on the right track. He got it to turn green again, cooled it, and gave it to Chat Noir again.

"Are we sure that this time it'll work?" Ladybug asked, "I mean, I'm happy if he's a fish but..."

"The fish bones make structure for the transformation but it wasn't controlled. I changed the measurement of the powder and split the use of tortoise shavings and that magic... stone thing so he can retain his flesh... maybe? This is all theory."

"It still smells like piss," Chat reported. Viperion set his new checkpoint and, grossly, Chat drank the glass.

This time, Chat did not retain his form and shape at all. He was a fish at the same time he was a human but he did not have bones. It was horrifying. Viperion reversed this and told the gang not to let him drink the glass. They changed the amount of bone powder and increased the use of magic... stone... thing... and waited for a new result.

The second time, Chat's suit actually changed but his legs became completely useless. Feeling they were getting closer, they altered the concoction more slightly.

In summary, this sounds like they had a blast and a half. And in reality, they definitely did. Chat continuously morphing into everything wrong was entertaining. But it was equally exhausting. Hours passed, morning became evening, and FINALLY, something better came out of it.

"If I turn into a blob, or a fish, or a gain gills but lose my ability to move AGAIN, I think I will kill Carapace," Chat declared. Every now and then he'd drank the potions even after Viperion's warnings not to so really all of that what his own miserable doing.

"Har har," Carapace deadpanned.

"I'm right here," Ladybug assured, "I'll catch you this time when you turn into a fish so you don't hit the floor."

"Hilarious," Chat said. Viperion set his new checkpoint and he drank the piss liquid.

"Nothing happened, damn it," Carapace pinched the bridge of his nose in exhaustion. "Maybe you're right. The black cat and ladybug aren't meant to power up."

"I feel like I just shat my pants," Chat said.

"Ew," Ladybug recoiled.

"Ugh, this is gross," Chat clutched his stomach, "I don't feel good."

Now, Ladybug was concerned. "Like... the same as how you didn't feel good before or is this new?"

"New," he said, "unpleasant..." He leaned on her for support, looking like he was about to vomit.

"Did I just kill him?" Carapace said in horror.

"No," Chat grunted, "I feel–"

Green light engulfed the hero and suddenly, both he and Ladybug were collapsing to the floor. On top of her and now significantly bigger, Chat struggled to move.

"I–" Carapace was in utter shock– "I did it?"

"Off of me!" Ladybug grunted.

"I can't! My legs won't–" Chat Noir looked back and discovered he did not have legs. He had a giant fish tail. "WOAH! I'm a fish again! A giant talking fish!"

"A merman!" Carapace said, "I did it! We did it! Holy crap, it worked this time!"

"Off!" Ladybug rolled the cat boy off of her. She observed his new form. He was slightly bigger than usual, cluing in that he wasn't exactly human in this state. And he had a long slick black fish's tail which was flexibly curled so he could fit in the kitchen.

"And you're breathing fine?" Carapace asked. Chat nodded. "If you can breathe underwater then that means we figured it out! Someone get him to the tub, I'm gonna write this down!"

"I'm telling the others!" Ziggy said (in reference to her fellow kwamis) and rushed out of the main room in delight.

It took both Ladybug and Viperion to haul the big merman that was Chat Noir to the tub. It was already full of water from all previous attempts but it was very messy in there now. As if to drown him, Ladybug stuck Chat's head in the water. Gills on the sides of his neck suddenly opened up and he appeared to be breathing.

"We did it!" she shouted. Carapace started going ballistic with his cheering in the other room.

She and Viperion pulled Chat Noir back up. Chat was absolutely delighted to be part fish. He also thought he was quite cool looking so his ego was beginning to inflate. However, the transformation wasn't wearing off. This was mildly concerning, but they had to make sure that the power up worked in all aspects. They dragged him back to the main room so they all could observe him further. By now, the kwamis of the sanctuary were rushing in and cheering for their success. Meanwhile, Chat was busy inspecting all new aspects of his body. The relief was enormous. After all that work, they'd successfully pulled off the first power up Carapace had ever attempted.

***

It had been thirty minutes. Chat Noir's power up had yet to wear off. They were determined to see how long it could last so he was now forbidden from de-transforming at all. However, all were too exhausted to start working on the solution for Ladybug's aquatic power. The four gathered in the main room, all sitting on the floor, allowing themselves to relax.

"I didn't imagine I'd spend my second day as a hero doing this," Viperion confessed.

"I don't think any of us expected to spend our hero lives turning Chat into a giant fish," Ladybug chuckled.

"You all seem so close," Viperion said curiously, "and you don't know each other's identities?" They all shook their heads no. "That's incredible."

"You can't tell anyone your secret, you know that, right?" Carapace asked.

"I know, I know. I also know this is only temporary. But still, this will probably be the coolest thing I ever do in my life," Viperion said with a smile. "And no one knows who you all are?"

"No one," Ladybug said, "it's too dangerous."

"Right," Viperion said, "it's just... I have a girlfriend. I hate secrets. I can't... imagine keeping this from her."

"I understand that," Ladybug said, "I have a boyfriend. He has no idea I'm Ladybug, and it's painful keeping it secret from him, my friends, and my family."

"Ladybug has a boyfriend?" Tigre said in surprise.

"I do," Ladybug smiled proudly.

"Me too... sorta," Tigre said, glancing at Carapace who looked at her with wide eyes that said 'shut the fuck up Alya.'

"Wait, Carapace too?" Chat asked. "No!!!! I'm the only single one here?!"

"I thought you were dating someone!" Ladybug said.

"Oh yeah, uh, we broke up."

"You did?"

"Yeah. Uh. Yeah. They didn't get akumatized or anything–"

"We fought your ex?!"

"I didn't say that!"

"You totally just did! Thank god they didn't know you were Chat Noir!" Ladybug exclaimed. "... Which akuma was it?"

"I ain't telling you!"

"So you all know how to handle loving someone while keeping this big of a secret from them?" Viperion asked timidly. Tigre and Carapace both snorted. Ladybug looked sad but also relaxed at this question.

"It's just part of the job," Ladybug said.

"Well... if you could tell anyone your identity, who would it be?" he asked.

"Hah! Chat asked that same thing, word for word, a month ago."

"I'm delighted to report she said she'd tell me," Chat boasted, wiggling his little fins excitedly.

"Of course I would," Ladybug elbowed him teasingly, "You're like, my best friend."

"Viperion, you're awfully interested in this topic," Carapace said, "you might accidentally uncover our identities because of your power. And if that happens with Ladybug or Chat, Sass will have to wipe it from your memory and leave you for safety but... Is there a reason you're so intrigued?"

"I don't know," Viperion admitted, "I just hate secrets. A lot. I feel really gross when I have a secret."

"Gross?" Tigre repeated. There was a long pause where the other three were looking at Viperion, waiting for him to explain or open up. He held his tongue.

"I feel great, when I'm like this," Viperion confessed. His hand touched his chest and there was a spark of joy on his face. "It's hard to say this since I don't know you all, but... I'm actually trans. And I don't know how but when I'm Viperion, my body transforms and I have... well... The body I wish I had. And it's incredible. But my gender... Was something I kept secret for a long time from my family, and when I finally came out it was like an explosive volcano tore into my life and ruined everything. It was a consequence of keeping a secret from people I'm supposed to trust. Everything is okay now but... That fear lingers. I never want to keep a secret again."

"Oh," Ladybug looked at him sadly, "I'm so sorry. That's understandable. I'm so sorry we've put this on you."

"It's okay," Viperion assured, "as you said, it's temporary. This isn't a secret I have to keep for very long."

"My boyfriend is trans, actually," Ladybug said fondly, "he doesn't talk much about it but I think he's in a good place now. I don't like keeping this life of mine hidden from him, but... it is unfortunately my duty."

"AAAH!" Chat Noir suddenly shouted. The other three jolted in surprise, jerked right out of the sad but hopeful moment of connection.

"Chat! You can't just scream like that!" Ladybug scolded.

"Transphobic, honestly," Carapace said sarcastically.

"Dusuu–" Chat blurted out– "Dusuu–"

"Dusuu?" Ladybug changed her expression completely, now taking him seriously.

"I- I-" it appeared he begun to struggle breathing– "he's– awake–"

"We know he's awake, he's been awake for a while," Carapace said.

"Sentimonster, I mean," Chat Noir said, "he's– sentimonster– Mayura–"

"Chat?"

"Dusuu has a new wielder," Chat said, barely getting his words out of his mouth, "and her name is– Mayura."

A/N

Me: damn how do I end this chapter without it being a flat line...

Chat Noir's spiritual connection to Dusuu I forshadowed in their fight against Prime Queen:

Yeah bringing that pointer note thing back. SENTI MONSTER ACTIVITIES YAAAAAAA. I wonder why Chat Noir can sense sentimonsters and Dusuu's silly activities..... Hm.... YEAH MAYURA IS HERE NOW. I was originally gonna dedicate a whole chapter to that BUT IT WOULD BE A TIME SUCK. So NEXT chapter will have that mixed in with other things instead of having a whole chapter building up like I originally planned. That probably sounds messy but in the original draft it was just following Gabriel around the whole time and really read like I was stalling the plot. 

I'm doing my best guys I swear. 

I hope you enjoyed this fluffy chapter. I wonder why they specifically chose to figure out the aquatic power up.... hm....