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English
Series:
Part 1 of Where the Light Doesn't Shine
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Anonymous
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Published:
2021-04-04
Updated:
2023-12-13
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26,853
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17/?
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I'll Set Myself on Fire (Just to Keep You Warm)

Summary:

Infamous assassins Double Black are sent to protect class 1A... without revealing the fact that they're assassins or causing a disaster. There's no way this could possibly go wrong, is there?

OR:
the most self-indulgent bsd x bnha fic you will ever see, by an author and beta with clear and obvious biases. oops.

DISCLAIMER: this fanfiction includes discussion of many controversial topics. opinions expressed in this fanfiction by any party do not reflect the author’s personal views. pls dont yell at me.

Notes:

this is kind of an overdone trope, but i adore creating chaos and it provides so many opportunities for that... anyways, i'm hoping this won't be like the other stories with the same basic idea. i've read a lot of them and they're awesome, but i want to create something unique. i think it'll be pretty different since i'm not using the canon BSD universe, but giving the BSD characters completely/mostly different backstories.

(See the end of the work for other works inspired by this one.)

Chapter 1: Assassins in the World of Heroes

Notes:

(See the end of the chapter for notes.)

Chapter Text

“Hey shitty mackerel, where do I go from here?” The male shifted, eyes flicking back and forth in the small vent he was crouched inside of.

“There should be an opening up ahead, turn right and continue a little over half a meter. Hey that’s almost as tall as you are!” His boyfriend’s cheerful voice buzzed in the redhead’s ear, and he had to shove down the urge to yell at the other male.

“Shut the fuck up,” he hissed under his breath, cursing the name of every deity he’d ever known for their boss’ sadistic streak. They worked well together, sure, but he had a suspicion that they were official mission partners simply because it amused Mori. Swiftly shoving the thoughts to the back of his mind, he moved to follow the directions he’d been given. “Can you see him?”

“Yep, he’s kinda ugly to be honest. I like my Chibi much better~”

“Damn right you do. Is he alone?” The redhead crouched next to the grate, leaning back and staying out of sight in case there was anyone in the room it opened into.

“Yeah, he entered alone right after the party ended and he’s just been sitting in bed since then. No one else is nearby or coming this late at night.” The sound of clacking keys echoed through the call as the speaker double-checked the hacked security cameras.

“Got it.” The smaller male pulled out his pocket knife, flipping open the screwdriver attachment and unscrewing the grate. Silently sliding it out of the way, he shifted to drop feet first onto the decorative rug underneath. The target’s eyes widened at the sight, and he scrambled for his phone. Before he could blink, the assassin had straightened up, a throwing knife embedding itself in the device.

“Sorry, I can’t let you do that.” Swiftly making his way to the man’s bedside, the redhead grinned as the older male gulped. “Hito Iyana, CEO of Takeo Industries, and leader of an underground human trafficking ring.” One hand on a hip, the assassin’s other hand trailed a gleaming knife to rest under the CEO’s chin, pressing lightly, not yet drawing blood.

“How did you…”

“How did I know? Wasn’t hard to find out. Once we got word of a trafficking ring in this area it was only a matter of time before we tracked you down.”

“Who are you?” The trembling CEO met the redhead’s eyes, a shiver racking his body at the cold, barely restrained bloodlust lurking in the vivid blue.

“No one important, really. Ever heard of Soukoku?” The redhead’s voice was light and playful, but there was a dark undertone that shook the CEO to the core. After a moment, his eyes went wide with recognition at the name he’d been given. He started to open his mouth to speak, but didn’t manage to get that far.

The redhead’s eyes narrowed, twisting the dagger to run it across the man’s neck. The blade cut through, almost buried hilt deep. The CEO began to choke, falling backward as the blood flow to his brain was cut off. Stepping back and sheathing his blade, the assassin turned stone-cold eyes on the dying man’s face.

“Since I’m feeling nice, I’ll tell you what’s happening. I severed your trachea, esophagus, and jugular vein. The blood flow to your brain has stopped, and the blood from the broken arteries is now making its way into your lungs. You’ll either die of the loss of blood to the brain, or from choking to death on your own blood. Either way is extremely painful, and to be honest I could care less which kills you first. You did this to yourself the moment you had the nerve to start a trafficking ring and operate on our territory.”

The redhead turned away, tapping his earpiece. “He’s dead. Or, dying, but he’ll be dead soon enough. He’ll just suffer for a while beforehand.”

“My, what a violent chibi. I can hear the pitiful chokes through the connection. Alright, you know how to get to the extraction point.”

“Roger that.” Without sparing the CEO another glance, the redhead leapt up, grabbing the edge of the vent and nimbly pulling himself back into the twisting maze.

---

When the redhead dropped to the ground on the outside of the wall, his partner was leaning against the bricks with a smirk on his face. The redhead scowled. “What the fuck are you doing here Dazai? You’re supposed to be with the car.”

“Here I was hoping Chuuya would be happy to see me! I came all this way just to see you after all.” The brunet pouted, his uncovered eye opened wide in faux innocence.

“The car is like a block away, and I was on my way there right now. You would have seen me anyway.” Chuuya began to walk in the direction of the car as he spoke, Dazai pushing off the wall to fall into step beside him.

“Yeah, but I do actually have a reason for being here. First off, here you go.” The brunet tossed a tiny object at the redhead, who caught it effortlessly, slipping it into his pocket with a quick nod of thanks. “Second, Mori showed up at the car while I was waiting. He told me to come get you, we’ve got a new assignment.”

“Why would you need to come get me though? Couldn’t he just tell us once I got to the car?” Chuuya raised an eyebrow, watching Dazai out of the corner of his eye. The brunet grimaced, and Chuuya suddenly had a very bad feeling.

“Yeah, but he wanted me to tell you the basics of the assignment, and he didn’t want to be within attacking distance.”

“Not giving me a lot of confidence, mackerel. What’s up with the job?” Chuuya stopped walking, turning to face his boyfriend. Dazai sighed and stopped as well. The duo were a fair distance from the manor they had come from, tucked against the wall of a tiny shop in the shadowed intervals in between street lamps. Running a hand through his unruly hair, Dazai’s eye narrowed.

“First off, the client is Midnight.”

“What?! Midnight as in Nemuri-sama?!” The redhead’s eyes went wide, mouth hanging open.

“That’s her. Well, she’s not exactly the client. She was the one who contacted Mori about the job, but the actual people hiring us are the people at UA High School.”

“That elite school for Hero wannabes where Nemuri-sama works? Who could Heroes possibly want dead enough to go against their precious morals and hire trained killers?”

“That’s the other thing.” Dazai heaved a sigh, dreading Chuuya’s reaction. “They don’t exactly want us to kill anyone. They want us to protect one of the Hero classes.”

“WHAT?!” The cement under Chuuya shattered, a spiraling crater destroying the surrounding sidewalk and part of the street. All things considered, it was less explosive than what Dazai had been expecting. “Wait wait wait. What class?”

“Class 1A.”

“Isn’t that the class that gets attacked by the League basically once a month if not more?”

“That’s the one.”

“So they want us to play glorified babysitters and protect a bunch of people with sticks up their asses who are supposed to be learning to fight against Villains, from a bunch of pathetic Villains? That’s the stupidest thing I’ve ever heard. Also, why can't our agent in the League do it?” The redhead huffed, crossing his arms across his chest. Dazai gave him a small smile.

“I agree, but Mori was pretty insistent that we take the job. Plus, our inside agent currently can't do anything to jeopardize their cover.”

“Ugh. Sounds like a lame excuse to me but whatever. How long will it even be? We have other jobs to do after all.”

“They don’t know.” The brunet looked ready to slam his head into the wall he was leaning against. “They want us to stay until either the League isn’t a threat anymore, or the class can defend themselves without us.”

“What the fuck do we do about our other work then? We have a list of targets nearly a dozen meters long, and it gets added to all the time.” The redhead raised an eyebrow, and the brunet grumbled.

“Apparently they’re going to use this as a chance for Atsu and Aku to shine, so they’ll be taking on some of our jobs with the help of Ranpo of course, since they don’t have nearly as much training as we do.”

“I guess that makes sense.” Chuuya frowned. “Doesn’t mean I have to like it though. I’d really rather not have to put up with a bunch of stuck-up brats who think they’re hot shit because they have such simplistic morals and strong enough Quirks to join UA.”

“I know, I’m not looking forward to dealing with them. Especially since that class has a bit of an ego problem considering what they’ve gone through. They seem to have gotten it in their head that they’re invincible, which is part of why they need someone to watch their back and make sure their ego doesn’t get them killed.”

“Tsk.” Chuuya flipped his hair over his shoulder, looking off the side.

“I don’t think either of us can turn down Nemuri-sama though.” Dazai gave a weak chuckle as Chuuya turned his glare on the brunet. Holding his hands up in a surrendering gesture, he gave the redhead an apologetic smile. Chuuya heaved a long-suffering sigh.

“Fuck, you’re right. I can’t turn down Nemuri-sama. Ok whatever, fuck it, I’ll do it. But you’re coming too, I’m not dealing with this shit without you.”

“You don’t have to tell me, I’ll follow you anywhere Chuuya.” The brunet held out a hand. Chuuya’s face went bright red, the smaller male refusing to meet Dazai’s eyes.

“Dumbass, you can’t just say shit like that!” Nevertheless, he still took the offered hand. Dazai chuckled, pulling the redhead into his embrace. Breath warm against Chuuya’s ear, he whispered.

“It’s true, I’d go anywhere as long as you’re there with me.” He nipped at the redhead’s earlobe, and the smaller shoved away from the laughing brunet.

“Jesus fuck Dazai, why are you like this!?” Chuuya glared at the taller male, the color of his face shifting to match his hair. Dazai grinned.

“One of mankind’s greatest mysteries. Now let’s get going before Mori decides to just take the car to go shopping for Elise and makes us walk back home.”

---

The intimidating man laced his fingers together, resting his elbows on the desk and leaning forward. “I take it you explained the job to Chuuya?”

“Yep! He only destroyed the sidewalk and part of the street this time.” Dazai snickered, but it soon turned to hacking coughs when he was roughly elbowed in the side by said redhead.

“Yes, he explained it to me,” Chuuya frowned. “I can’t say I’m very excited about it, but I’ll do it.”

“Wonderful. I assume that means Dazai has accepted as well?” At the affirmative nod, Mori smiled and slid a pair of binders towards the duo. “Very good. Here are the full job instructions and details, as well as the contracts you will have to sign. The rest is all information on all the staff members as well as information about the class you’ll be protecting. At the back are all the profiles we have of League members, since it will be important for you both to recognize them and understand their Quirks.”

Chuuya picked up a binder, flicking through the pages. The list of details and instructions was relatively short, the basic ideas being a) they will not seriously injure any students or staff members, but if they wish to help the students train then slight injury is ok as long as it is part of the training, b) the student’s safety is always the top priority, if they are attacked they must be protected no matter if the assailant is a League member or not, c) at least attempt capture of any League members they run into, and d) the students of all other classes are not to know who they are, as far as the students are concerned they’re transfer students from a Hero school in France.

The profiles were more interesting to look through, even if it was mostly information already available to the public. Each one was accompanied by a picture, and in the case of the students they even listed things about the subject’s personality and current training stats. The teacher’s profiles all had information about their Hero careers, as well as their records as teachers. Chuuya let out a low whistle when he saw one teacher had expelled 154 students. Aizawa Shota, huh? He was the teacher for the class they were tasked with protecting. Chuuya was definitely looking forward to meeting the man, if nothing else.

“Mori, I was wondering why we specifically were hired. I’m currently under the impression that the two of us were requested specifically, but I’m trying to figure out why UA would hire a pair of infamous killers.” Dazai looked up from the binder, his visible eye narrowed in a questioning glare.

“From what Kayama has told me, the principal was concerned about the danger the students were in. He called a staff meeting to figure out what to do, but it seems none of the ideas that were suggested were possible options. Then Kayama mentioned knowing how to hire you two, and he agreed, since it was the best option they had.” Mori shrugged, and Dazai nodded, going back to the binder.

“Where will we be staying while there? I’m assuming they want us near the students, so will we be living in the dorms?” Chuuya set the binder down in front of him, tilting his head.

“Yes. Once you both sign the contracts I’m to give you a few more papers for those binders. One is a map of the dorms, including the location of all the students' individual rooms.”

“What about the other papers?”

“Maps of the campus, the main building and all the different classes, emergency procedures, things like that. You can understand why I can’t hand those out without you signing the contracts first.” Mori leaned back in his chair, pulling two folders out from a desk drawer. “So, ready to sign?”

Notes:

yes i researched slit throats for this, yes i will end up on a government watchlist for my search history, no i don't regret anything