Actions

Work Header

Rating:
Archive Warning:
Category:
Fandoms:
Relationships:
Characters:
Additional Tags:
Language:
English
Stats:
Published:
2023-02-18
Updated:
2025-07-09
Words:
4,399
Chapters:
2/?
Comments:
8
Kudos:
377
Bookmarks:
24
Hits:
4,615

Operation Rin-Isagi

Summary:

A group of 4: Bachira, Kunigami, Chigiri, and Nagi all have sworn to protect Isagi from any tarnishing. But After a new kid Rin joins their class, do they have what it takes to keep him off of Isagi?

Chapt 1 will get a rewrite someday..

Notes:

(See the end of the work for notes.)

Chapter Text

5th grade, outside on the field, a fight broke out. In one hand, a red haired boy held a nintendo switch, and tried to defend it with his one remaining spare hand, as an orange hair kid was constantly tackling him to pin him down.

Apparently, Kunigami(orange hair kid) was in the middle of a Super Smash Bros Ultimate match, until Chigiri(red hair kid) had snatched it right from his hand. Right next to the two boys fighting was a white hair kid, Nagi, the actual owner of the switch. Nagi was whining about his nintendo, desperately trying to get it back.

“GAME!” A noise suddenly came from the switch, a noise meaning the match had ended.

“CHIGIRI YOU BASTARD, I WAS IN THE MIDDLE OF THAT MATCH AND NOW YOU MADE ME LOSE, GIVE IT BACK.”

“IN YOUR DREAMS, MAYBE IF YOU CAN CATCH ME SLOWPOKE!”

Right after, Chigiri had bolted for the soccer field, with Kunigami not too far behind, though distance started to grow the more they ran. Even from across the field, you could hear the occasional “GET BACK HERE PUSSY AND FIGHT ME” or “STOP RUNNING YOU PRINCESS BASTARD,” and if you listened closely enough, you could hear the faint complaints of the short-of-breath Nagi trying to chase them.

“FIGHT! FIGHT! FIGHT!” A loud guy chanted, “This is very entertaining.”

“SHUT UP BACHIRA, AND HELP ME GET IT BACK.” Kunigami screamed, still chasing Chirigi around the field.

Suddenly, there’s a loud “PLOP”, and right there, Chigiri is face first in the field. After finally being able to catch up, Kunigami keeps Chigiri down and raises his fist up.

“I was so close to winning, I’m going to..” Kunigami went on and on about how he would absolutely demolish Chigiri. As Kunigami kept threatening Chigiri, Nagi’s first priority was to get the switch, praying that it didn’t break during the fall. He could not live without his baby, his nintendo, the thing he saved up 7months worth of allowance to buy.

“You weren’t going to win anyway, stop being delusional. You’re ass at everything you do too.”

“Oh you want to bet? Play me in football, now.”

“What’s the point in playing against someone who can’t even do something as measly as catching up to me?”

Chigiri definitely made a mistake, Kunigami started raising his fist again.

“YOU IDIOT!”

Right as he was about to hit a blow to the princess’s face, a voice goes “Don’t hit him!”
A black hair stood next to them, pouting, clearly looking a bit angry.

“It’s not good to hit people! My mom said they could get really hurt. You guys should calm down, I even have extra chocolates that my mom packed me if you guys want to eat them with me.”

Everyone stopped and looked at the kid. They all has the same thought… “was this.. an angel?”

That day, all of them had then sworn to protect Isagi from anything and anyone that would be a threat to their pure, cute, angel Isagi. Oh, and also the day the 5 would begin to hang out everyday.

 

It was now sophomore year high school. And yes, the angel Isagi was still as pure as ever… and as popular is ever. Now, “Angel Isagi” wasn’t just Chigiri’s, Nagi’s, Bachira’s, or Kunigami’s nickname, but rather most people in the school called him that. The boys hated it, but there wasn’t much they could do to prevent it, well besides violence. On saturdays, the 4 boys (obviously not Isagi) would meet up, discuss about any “Isagi Activity”. This consists of all the 4 boys talking about everyone who had interacted with Isagi, and at the end, they would have a vote regarding whether they approved of the interaction or not. And you bet, the next day, you will have one of these boys at the front of your doorstep if majority voted “not approved”.

This method of violence had mostly worked, and had way more people avoiding/being more cautious around Isagi. A big win for them. Except it had also earned them the name, “Isagi’s Simps”.

 

“Oh wow, a lot of people must be getting sick now, not many people are showing up for class.” Isagi said, very unaware of the actual reason.

Of course they couldn’t tell him the real reason, since Isagi would be begging them to stop, and plus they didn’t want him to feel guilty about it as well.

“Alright class, we have a new student. Would you like to introduce yourself?”

“Yeah. I’m Rin Itoshi. I play football, better than all of you here.”

“Is that all?”

“Yeah.”

Rin was very good looking, so dreamy, he could probably even be a model, and he played football too??? Isagi couldn’t stop staring the man down. It was obvious, maybe a bit too obvious. His group of friends all had the same thought, ‘Are you serious, HIM?’

Rin stood a bit longer, then looked at Isagi and smiled. Isagi looked down to his right and started fiddling with his fingers, he became almost as red as a tomato. Rin then walked to the open desk right in front of Isagi, still smiling.

‘This Bastard.. I’m going to kill this cocky fucker.” And all 4 of them started looking at each other, signaling that they HAD to meet during lunch.

 

“..AND THRASH HIS SKULL INTO MY KNEE AND PUNCH HIM SO HARD THA-“

Chigiri stopping Kunigami midway through his rant, responds with “well, maybe don’t do all of that or else you’ll get expelled.”

“I mean why don’t we just challenge him to a football 1v1.” Bachira suggests, “I mean he said he was ‘better than everyone’”.

“I will. And I’ll destroy the bastard.”

“Yea alright good luck, I heard he’s Sae Itoshi’s little brother.” Nagi replies, while playing some.. pokemon game on his phone? “Seems like too much of a hassle, just beat him up honestly.”

“Hell no, that makes it even better, I’ll crush his ego, even make him quit football.” Kunigami says.

“Well, if Kunigami is in it, so am I.”

“Yeah! Me too! You never know, maybe he has a monster too.”

“Well suit yourselves, I’m going to keep playing.”
And off the 3 went, off to go find a certain, charming black hair man.

 

Isagi spent half of his break looking at tall, charming, black hair man play football. “GOAL!!” one of his classmates cheered, after Rin has just scored from a corner kick. Isagi has never seen anything like that before, how could he be so perfect? Rin then lifted his shirt up a bit to wipe off his sweat. Isagi was staring very hard, and fanboying with thoughts like ‘oh god oh god, he has abs too??’ It seemed like Rin had noticed the pair of eyes on him, and looked at Isagi on the bleachers.

“Why don’t you come join us, Isagi?”

His voice was so nice, it had been a while since Isagi crushed on anyone this hard, let alone someone who just came to his school TODAY. But how could he help it? He started getting up saying, “Oh, yeah sur-“

Until he was cut off by a certain somebody… or a few certain somebodies.

“1v1 me, in football, right now you cocky bastard.” Declared Kunigami, pointing his finger straight at Rin.

“YEAHH!! WOOO GO KUNIGAMI!” Cheered Bachira in the background, he jumped up and down while waving his hands.

Rin studied him up and down.

“You’re not worth my time.”

“Look at this, the brother of the famous Sae Itoshi trying to pussy his way out. Looks like you weren’t as good as everyone said you were, what a disappointment to your brother.”

The whole field went silent.

“So, you said right now?”

“Yeah, Sae Itoshi’s brother. Right now.”

“Alright I’ll do it.”

“You better watch this, Isagi!” Kunigami yelled.

Kunigami let Rin start with the ball. He waited for Rin to make the first move, right as he see’s Rin start to shift, he goes to intercept the ball.. well except… where did he go? Well shit, the fucker got right passed him, all in the blink of and eye. As Kunigami desperately tried to run and catch up, it was already too late.

“GOALLLLLLLL!!!” Yelled a classmate.

“..I let you get that goal, this time I’ll start with the ball.”

Not soon after, there was another goal, and you guessed it.. it was Rin’s.

“Play me again!”

“GOALL FOR RIN ITOSHI!”

“ONE. MORE. TIME!”

“A FOURTH GOAL FOR RIN! 4-0!!!”

This went on until finally, Kunigami gave up with a final score of 9-0.

Rin scoffed. “All that talk for nothing huh?”

Kunigami couldn’t even look up, he got destroyed. Fuck, all he wanted to do was get this cocky bastard away from Isagi.

“UGH!! Isagi, how could you like this asshole!” Kunigami yelled, he was so loud you could probably hear him from two blocks down. But most importantly.. RIN could hear him.

Isagi stood up, clearly very embarrassed. He burned red from head to toe, his eyes even looking a bit watery.

“You idiot!! I don’t!” And the smaller black hair boy then stormed off inside… and that’s when Kunigami realized he fucked up.

 

It wasn’t long after school had ended, that the groupchat had a new message.

[ Isagi Protection Squad ]

Chigiri:
Kunigami got his ass beat so hard LOL

Nagi:
I told you it wasn’t worth doing. You should’ve just beat him up.

Bachira:
I GOT IT ALL ON CAMERA LMAOOOO

Bachira sent a video.

Kunigami:
How about one of you guys try it instead of laughing at me. I bet you guys will get your ass kicked harder than me.

Chigiri:
dude… it’s not possible to do worse than a 0-9 score

Kunigami:
stfu.

Nagi:
You suck Kunigami

Chigiri:
In all seriousness, we need to find a way to stop this Rin guy from getting Isagi.

Bachria:
I agreeeeeee

Nagi:
Just put him in the hospital

Chigiri:
I already said no, we don’t want to get expelled right?

Nagi:
more gaming time for me

Chigiri:
You idiot, then you’ll barely be able to hang out with Isagi

Kunigami:
I’m going to embarrass Rin, just like how he did to me. I’ll make him look so bad in front of Isagi so Isagi will never talk to him again.

Bachira:
Ooooo it’s settled then! We will call it Operation Rin-Isagi!! :DD

Nagi:
That sounds more like you’re trying to get them together.

Bachira:
Do you have a better idea?

Nagi:
No.

Bachira:
Exactly :)

Chigiri:
Sounds good to me

Kunigami:
Yeah

Bachira has changed the group chat name to ‘Operation Rin Isagi’

Chapter 2: The first plan

Chapter Text

The four sat huddled up around a table. In front of them laid a huge flat screen with a photo of Rin with devil horns drawn on him. They were meeting up in one of the business rooms in Reo’s mansion (made possible by having Nagi in the friend group).

“Alright, Kunigami, WHAT was your plan again?” Chigiri asked, baffled.

“We go to his house, pass the fence, sneak inside then take photos. There has to be some embarrassing photos of him. My mom has 10 of mine framed in our house,” replied Kunigami.

“Dude, I didn’t actually want you to repeat it, I’m trying to get you to actually think about what you’re saying.” Chigiri put his face in his palm then sighed. “You really think we’re going to go break into someone’s house—and also, what lame idea is that???”

“Sometimes going illegal is the best route to solving your problems,” chimed Nagi.

“Where did you hear that from??”

“Bachira.” Nagi pointed to the right of Chigiri.

Chigiri looked to his right. “Seriously?”

“How else did you think I got these Gucci sunglasses?” Bachira jumped in, wearing the pair of sunglasses he had mentioned.

“WHAT THE FUCK, BACHIRA? YOU STOLE FROM GUCCI?” Chigiri screamed.

“You thought Bachira could afford those?” Nagi said, buried in his pokemon game.

Chigiri groaned, two fingers on each temple to help his brain cope with the stupidity of his friend group. He tried to find a compromise.

“Can we knock, at least?”

“Where would the fun in that be?” Bachira sulks, looking ‘innocently’ to the side.

“What would the point in knocking even be?” Nagi questioned.

“I don’t know—well, maybe so we don’t BREAK INTO SOMEONE'S HOUSE!?!” Chigiri tries hard to persuade the stubborn (or just stupid) crowd.

Nagi responds, face still buried in his game, “do you think they’d let in a bunch of strangers if we knock?”

“Well, my family honestly just opens the door for anyone, especially if they see anyone wearing our school uniform,” Chigiri says, then his face scrunches up a bit. “Actually… is that a good thing?”

At the corner of the table, a certain orange hair mutters, “if I see him, then he’s getting his shit rocked.”

“You are not that guy bro,” Nagi rubs in. “0-9, remember.”

“Oi you bastard—I’d fold you.” Kunigami flips Nagi off.

“Kunigami, he’s gonna call Reo if you even try,” Chigiri warned.

“God— he’s just like those spoiled rich kids.”

 

 

“NAGI, take your foot off the car seat, it’s gonna make it dirty,” whined Chigiri.

“It’s fine, I don’t care,” Reo defends, which encourages Nagi to put his other foot on the seat as well.

“Kunigami was right. Nagi is like a spoiled child, and YOU’RE the cause, Reo,” whined Chigiri further, trying to avoid a previous dirt smeared spot on his seat—the cramped back row really wasn’t working in his favor.

“That’s Mr. Funder for you. He drives us and buys us snacks so you can’t really complain,” Bachira comments, chewing gum.

“Yeah I know that—BACHIRA DON’T BLOW A BUBBLE THAT CLOSE TO MY HAIR—“

“Guys,” Reo interrupts, trying to break the chaos, “why has Kunigami been so quiet?”

“He’s sulking,” replied Bachira.

“Why?”

“WELL, TODAY KUNIGAMI DECIDED TO 1v1-“

The back row was then filled by sounds of muffled gibberish and rustling as Kunigami held his hand over Bachira’s mouth. A sudden sharp turn led Bachira to slide left and bang his head into Kunigami’s.

Reo sighed in the front seat, defeated. It was like babysitting. (Actually, Chigiri could also share his pain).

“Can you guys stop fighting. It’s crammed enough back here.”

The only sound that could escape from Bachira: “MMMMMMPPOHSHHAHXHIWWB!! HELP-“

Chigiri sighed as his request flew over their heads, leaving him to (attempt) holding Kunigami’s wrists so Bachira could stop having to flail like a fish.

The car began to slow down on a very wealthy street (though not comparable to the one Reo lived on since he basically owned his own street). The first house to catch their attention was a huge mansion located on the corner of the street. Half of it was covered by a thick, grassy fence, or wall if you would.

Reo parked the car near the back of the house. Chigiri and Kunigami looked at the house, then at each other, then at the house, then at each other, then—

Bachira was the first one to shoot up with a bright, gleaming look in his face. He put his hands on both their shoulders and shouted.

“THIS WILL BE SO FUN!!”

The three exited the car (one definitely most hesitantly than the others). The huge grass wall loomed over them, casting an audible gulp from Chigiri.

Reo then threw head covers out the passenger window. It wasn’t requested, but Reo figured it would be good “just in case if they end up getting seen.”

The three studied the options before them: a unicorn head, an octopus, and a chicken. They could hear snickering coming from the driver’s seat and Chigiri was quick to flip him off.

Chigiri noticed Nagi was the only one who didn’t step out the car.

“Is Nagi coming out?”

Before he could finish his sentence, Nagi started rummaging under his seat. Looking through the passenger window, the three saw Nagi whip out a controller, a laptop, and a drone. He then passed out 3 ear pieces and pointed at his ear.

“What the hell?? I mean, okay-“

They all put the ear pieces in.

“HI,” Nagi suddenly screamed into his mic causing everyone to jump. He and Bachira giggled while another middle finger was prompted by Chigiri (and possibly the biggest side eye from Kunigami).

“I’ll warn you guys about anything,” Nagi reassured. “I’ll tell you what’s over the grass walls.”

The others nodded. Chigiri placed on his chicken mask. Bachira snatched the unicorn one and Kunigami (reluctantly) took the octopus. Then Nagi waved his hand towards the house; their queue to start moving. Ear pieces in, they followed Nagi’s instructions to begin their entry through the side of the house. Bachira confidently led them and was the first to start climbing the grass after Nagi gave them the heads up.

“Do you think anyone is home?” Questioned Chigiri, still unsure about this decision he is about to make.

Kunigami next to him, looking just as unsure, responded that he doesn’t know, but most likely.

The rustling of the leaves stopped after a faint stomp on the ground.

“Come on, scaredy cats!!” Bachira urged, and the two others shortly followed.

 

 

The inside of Rin’s garden was gorgeous. All types of flowers laid around a lush, green grass field. The large pool the family owned sat on the left of the garden, decorated with all sorts of tropical-looking trees and sand to top it all off. Bushes of roses led the way toward the back door.

“Everything about this place just screams rich,” commented Chigiri.

While Chigiri wasn’t paying attention, his hand on a branch slipped causing him to fall back . Thankfully, a swift redhead caught him before he killed his back.

“Thanks man,” Chigiri chuckled, still hanging down.

“No problem,” replied Kunigami.

Chigiri got his foot out and just jumped down from Kunigami’s arms. Not a second later, a familiar loud voice blasted into their ears (again).

“The best way to enter would be through the window to your right, which squeezes into the bathroom.”

“Nagi could you make it quieter??? My ears” pleaded Kunigami.

“Aye aye captain!” Bachira hummed, and was, again, the first one to follow out.

The window, which just so happened to be lifted a bit, left the group a bit suspicious, but didn’t cause them to back out. And so, they all ended up hurdled in the bathroom.

Nagi reassured them that the hallway was empty outside since he looked through a different window. With the information, Chigiri cracked the door open to which Bachira full on swung open, causing Chigiri to freeze in his place til he saw the coast was clear.

“Okay, let’s make this quick,” Kunigami urged.

Before they split up, Nagi delievered news:

“Wait, I see two people.”

The group halted, waiting for more information—and maybe the nerves.

“It’s Sae and Shidou. They’re in the living room.”

Well great. That’s where the stairs are.

“Okay, well they aren’t too bad,” sighed Chigiri.

“Probably smooching anyway,” giggled Bachira (to which he was somewhat right earlier before).

“The living room is to your left, so don’t go left. Good luck.”

The good luck made Chigiri shiver, reminding him of what he got himself into. Kunigami and Bachira looked very ready and were the firsts to scramble. Chigiri headed to the kitchen which really didn’t have much besides a few modern paintings and plants. The thing that really caught his eye was the beautiful marbling on the counters and that fact that they had their own bar?? Rich people stuff…

The others didn’t have it so well either. Bachira kept getting distracted on photos of their cats and also baby Rin and Sae. You could occasionally see him poke on the glass squealing about how cute they were.

“Rin-chan was so cute as a baby~”

As for Kunigami, that boy was on a MISSION. No spot of the room was left untouched and boy he investigated. He mostly dug up junk in their library, which also doubled as another chill area, so it contained many things. Kunigami stumbled upon what he considered gold.

“I found one,” he said into the ear piece.

They all decided to meet back up at the bathroom.

Grouped up, Kunigami flipped over the photo, the photo that was going to save Isagi from ever falling for the tarnishing Rin Itoshi.

It was elementary schooler Itoshi Rin in a derpy monster onesie for Halloween.

There was only silence.

“Bro, how is this gonna even do anything-“ Chigiri sighed.

“Rin-Chan looks so cute in this too!!!” Bachira basically fanboyed.

Kunigami was quick to respond. “Isn’t this considered embarrassing? Also, Bachira he’s our ENEMY.”

They continued bickering until a voice went through their ear pieces.

“You guys are cooked.”

Suddenly, the handle to the door turned, but not fully since they had locked the door.

“Who the hell is in here?” Sae asked, continuously knocking on the door.

The group stayed silent, and they could hear Shidou come to check up on Sae.

The group just stared at each other, then the window.

“I’m gonna knock this door down,” Sae stated.

Panic insued because there was no way all 3 of them were squeezing through the window in time. Chigiri bolted and was the first to try to get out. Halfway through the window, he heard Bachira shout.

“Do you have anything embarrassing of Rin?”

There was a short pause, I mean a VERY short pause, because right after, Shidou began to burst out laughing and ranted.

“SO MANY. WHY ARE YA ASKIN’?”

“We need them for something.” Kunigami responded, though careful to make his voice higher.

“I honestly would’ve showed them for free!” And Shidou continued to cackle.

Chigiri was already out of that house, but a unicorn-masked man, along with a octopus-masked man stayed.

Bachira opened the door and Shidou quite literally bursted into tears. Sae was obviously not amused and gave the biggest stank eye to both Shidou and the two boys.

Shidou invited them to the living room. Not even 2 seconds after whipping out his phone, he began wheezing.

“Oh man, your brother is too fucking funny,” he said to Sae, which earned him no response.

The two boys were dying of curiosity. So when Shidou turned the phone, Bachira and Kunigami both busted out laughing.

“This was back when he said he could beat me in a soccer 1v1. And winner made the loser do anything they wanted. He said if he won, I’d have to stop hitting on his brother, but I know Sae would never want that… hehe”

Sae rolled his eyes and muttered “yeah right.”

“So with the power of LOVE,” Shidou said exaggeratingly, wrapping Sae in his arm to which he received no protest, “I beat Rin 7-3.”

“And that’s why he had to-“ Bachira was cutoff by the sound of the front door unlocking.

Kunigami looked in terror while Bachira let out an audible gasp.

The Rin Itoshi and their little angle Isagi entered together through the front door. The first thing they could see were two mysterious beings in unicorn and octopus head coverings.

“What the hell,” Rin said.

Isagi just looked really puzzled.

“Who are these people, Sae?” Rin demanded.

Shidou was quick to counter. “I saw them walking past so I just invited them in, no biggie, these are my bros.”

Rin just scoffed. Bachira was quick to shout “HEY ISAGI!” to which Isagi said “hi” back in his normal cheerful tone, but definitely with a hint of confusion since he didn’t expect Bachira to be here…especially in a unicorn head.

Kunigami didn’t spout a word, and was more confused on why Bachira always spoke at the worst times. They should’ve just stayed secret.

“Isagi, want to see a quick photo of Rin?” Shidou asked, smirking.

Rin already knew what was happening when he noticed Shidou smirking, but it was already too late.

What stood before Isagi was a photo of Rin in a full-fledged maid outfit. Isagi could only stare before Rin snatched the phone out Shidou’s hand.

Kunigami was celebrating in his head while Bachira was tearing up from laughter (again). The chuckles of Isagi’s soon followed.

Rin just stood there, in between being pissed and embarrassed.

“Why are you in a maid outfit Rin?” Asked Isagi, still chuckling.

“Shidou dared me too… I hate that photo.” He had a clear look of annoyance and embarrassment on his face.

In an attempt of comfort, Isagi said, “hey, don’t look so embarrassed! I think it’s super funny and cute. I would’ve never expected you to wear something like this.”

Rin paused, then swiftly responded with “well, if you think it’s cute, then I guess I’m fine with it.”

Isagi just stood there stunned, face turning red, realizing what he had said. In the background was audible puking noises made my Shidou, mocking the absolutely cheesiness of these two lovebirds. Bachira joined with him.

I don’t think anyone had it worse than Kunigami, who couldn’t process what was happening, leading him to asking his dying question.

“Hey Isagi, why are you here with Rin anyway?”

Isagi was also questioning why Kunigami was here, but still flustered, he felt like he needed to defend himself.

“Well.. uh… I was struggling on a project in the library and Rin happened to notice. He saw I was missing a few materials and offered to give me some since he has a lot of extras at his house.” Isagi fiddled his hands.

“Really?”

“Yes! I swear that’s why!”

Kunigami was definitely relieved, and offered to go with them to get the supplies to which Rin said, “no, we can go alone.”

Kunigami protested but Isagi backed him up.

“It’s okay Kunigami! I just need a few supplies! You don’t need to come, but thanks!”

Kunigami felt his heart shatter into a gazillion pieces. Kunigami wanted to protest, but he felt defeated as they began heading upstairs.

“I’m leaving…” said Kunigami, bummed out.

Bachira said he’d stay, urging Shidou to show more photos as they both cackled like gremlins on the living room sofa. Sae just looked so done and began reading.

And that’s how the first plan of Operation Rin-Isagi failed. But it was surely not their last one.

Notes:

I have a B- in english and have never wrote a fanfic before. My vocabulary consists of around 30 words, so will this fanfic end up good? honestly probably not.

also their personalities probably wouldnt be this but i was debating whether to swap kunigami for barou instead but decided not to