#bkdk Their plane crashed. Of all the shitty D-list movie tropes...

26 views Aug 05, 2026 ~19 min read

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#bkdk

Their plane crashed.

Of all the shitty D-list movie tropes Katsuki had unfortunately been subject to in his life, this truly was the fucking worst.

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They landed on some chain of islands (of fucking course), which was lightyears better than floating aimlessly in the middle of the ocean, so Katsuki shouldn’t complain. He still did, loudly. It didn’t matter. Thanks to their circumstances, Deku was the only one around to hear it.

                            3
                        
If he shut his eyes for too long he’d remember the raw terror that had bolted through him as they began to nosedive (the panic in Deku’s impossibly wide eyes, the painful adrenaline that had him tackling Izuku out of the gaping hole in the plane, the screeching wind, the way his

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hands screamed from blasting repeatedly to slow their descent, until they were close enough to the ground that Deku could use Blackwhip to lower them safely; the out-of-body horror of watching the plane hit the water in the distance from their spot on the shore), so he didn’t.

                            5
                        
Instead, he barked at Deku to find water while he looked for something flammable.

Izuku squinted up at the sun, shading his eyes with a palm. “Kacchan, it probably won’t get that cold tonight.”

Motherfucker. “Stop questioning me, moron. There’s a sea breeze and mosquitos.”

                            6
                        
Izuku turned to squint at him instead. “Why are you so calm. Or… I don’t know. Prepared.”

“Because we won’t be here long, stupid. The plane had a GPS, they know where it went down.” Hopefully.

                            7
                        
But Katsuki wasn’t going to think about the alternative. “And I used to read those survival books as a kid,” he added, to throw Izuku off any potentially-worryful scent.

It worked. Izuku brightened considerably, beaming. “Kacchan’s amazing!”

                            8
                        
The island was, Katsuki begrudgingly admitted to himself, quite beautiful. Untouched by the hands of man. A wide beach of warm sand scattered with driftwood leading to a dense forest.

                            9
                        
Katsuki didn’t really like the look of that – who knew what wildlife thrived in the untouched parts of the world.

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But trees like that meant high likelihood of freshwater, and if they got out of here soon enough, they didn’t have to worry much about drinking dirt or germs or whatnot, because they could get on a course of antibiotics, or even get their stomachs pumped,  soon as they were back.

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The sun beat down on them but it was okay. Neither of them were dressed for sun protection, having been on the way back from an overseas two-day hero conference, but that also meant they hadn’t packed anything valuable that was now drifting to the bottom of the ocean.

                            12
                        
They’d grabbed their backpacks on the way down anyway, so they had some snacks, two water bottles, Katsuki’s favourite t-shirt, Izuku’s favourite sweater. A laptop, which was useless. A treated hand towel, because Katsuki was a flight risk.

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Katsuki squatted on the beach where the sand was dry, closer to the forest but not too close. He set up the driftwood he’d gathered into a little hut for a fire, stuffing moss and dead grass underneath. Izuku came up to him with giant leaves bundled in his arms.

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“We can sleep on these, Kacchan!” Izuku said happily. Dumbass probably thought this was a fucking island vacation.

The leaves were good, though. Katsuki grunted and took them from him, helping Izuku lay them out on the ground by the driftwood pile.

                            15
                        
He looked up into the forest. “Did you find water?”

Izuku shook his head. “No, but I heard a waterfall. I wanted to come get you so we could check it out together.”

Katsuki ruffled his hair, pleased. “Good job not being a moron.”

                            16
                        
They trekked into the forest, twigs and leaves crunching underfoot. Katsuki kept a keen eye on the shadows of the branches, half expecting to be assaulted by a wild boar, or—

He ducked under a branch, holding the leaves up and out of the way for Izuku to follow.

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Or a leopard or some shit. That would suck. The air was thick and sleepy between the trees, which meant two things: one, it creeped Katsuki the fuck out, and two, there must be enough water nearby to lend to humidity.

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They followed the sound of rushing water until they made it to the waterfall, with about an hour or so left before sundown, if Katsuki had to guess. Izuku gasped in awe.

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It was pretty, although he knew the algae-covered stone to be deceptively slippery, and didn’t trust Deku not to slip and crack his head open climbing one.

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The water fell in torrents onto elevated rock and then trickled into a small lagoon, and Katsuki could see fish in the clear water. Too bad neither of them had the skillset to catch one. The middle of the little lagoon was dark, too dark, so it must be deep.

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Katsuki toyed with the idea of looking in, and changed his mind, shivering.

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“This is making me thirsty,” Izuku muttered, staring at the torrential water. Katsuki dug one of their two water bottles out of their pack and shoved it at him — it was half full, the other empty from the thirst compounded by scavenging in the sun, and the hike.

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Izuku took the water gratefully and downed half of it, offering the rest to Katsuki, who shook his head. “It’s fine, nerd. There’s more right here.”

                            24
                        
Izuku softened his stupid googly eyes at him and swallowed another mouthful from the bottle. They were grown men who spent their work shifts outside — they usually drank a lot of water.

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“Nitroglycerin is waterproof. Maybe you can explode some fish.”

“Kind of dark, nerd,” Katsuki said, and Izuku had the grace to look sheepish.

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Katsuki tried to think about how that would work. He wasn’t a fucking chemistry major — he hadn’t even gone to college — so he had no idea what that would do to the safety of the water supply. The water looked too still for proper circulation to disperse the blast compounds.

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If he accidentally poisoned the water and Izuku died because of it, he’d cut his own hands off himself.

“Dunno how I could kill one without blowing it to tiny pieces,” he offered instead of any of that, and Izuku hummed.

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“That’s true. And I don’t know if any would be brave enough to swim near your hand once it was in the water, at least close enough to be caught in the blast radius. I guess we have more of an issue catching them than killing them.

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I could use Blackwhip but I’ve never tried that underwater, and if we try too much we might scare the fish away from swimming near the water edge. Do you think that could happen? I saw that in a documentary once. Something about, like, tainted territory.

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They get the instinct to stay away out of self preservation, just in case.”

Izuku continued muttering to himself about wildlife evolutionary habits while Katsuki crouched by the lagoon and watched the fish, letting the lilting soft tone hum in the background. Self preservation.

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Neither of them were any good at that, historically, not when it came to each other. And here they were faced with survival on an empty island, with only the other.

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Izuku had gotten to the point of his rambling where his whirring mind stumbled upon something that made him emotional, and now he was sniffing something about baby birds.

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Katsuki straightened with a groan and a frankly comedic assortment of cracking joints, and swung an arm around Izuku’s shoulder as required, ruffling his hair.

“…abandoned… Kacchan,” Izuku warbled, choked up.

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Katsuki shook his head, exasperated and secretly fond. “If we find any lonely birds, we’ll take care of them, okay?”

Izuku wiped his eyes roughly, clearing his throat, well past becoming embarrassed by his tears.

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Not many people knew this, but Izuku didn’t cry the moment he was born like most. It had terrified Inko, who thought he was dead, but the nurses and doctors assured her he was healthy, that some babies just – didn’t cry right away.

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He did eventually, and all was well, but young Katsuki was always fascinated by this story, the elastic way Inko would tell it, the irony that mumbling, cheery Izuku had been born quiet.

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That he didn’t burst into the waking world with a declaration on his lips, hadn’t always had so much to say.

He’d later think privately that Izuku cried so much for the rest of his life to make up for those precious first minutes when he was silent.

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Katsuki steered Izuku back to the shore, wishing there was some shade over the water. “Try using Blackwhip in the water here. For practice.”

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Izuku had brightened considerably on the walk back, distracted by about 400 different things and talking a mile a minute, but he seemed to lift even higher at the suggestion. “Kacchan is so smart!”

                            40
                        
It was a bust. The waves were gentle, loping in lazily, but it was still a huge contrast to the practically still-water lagoon. Izuku couldn’t seem to focus properly, depth perception out of whack with the sun in his eyes and on his back on top of the new medium for his quirk.

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He was getting frustrated, so Katsuki stopped him.

“Oi. Shithead. It’s okay.”

Izuku shook his head angrily, curls bouncing. “I don’t understand why I can’t get it!”

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Katsuki snorted. “It’s a shitty environment to learn something brand new. Plus you’re not hyped up in battle or anything. It’s fine.”

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It wasn’t, exactly, since Katsuki didn’t know how long they’d be there or how much food they’d need, but Izuku looked on the verge of a panic attack.

Izuku whirled upon him, eyes wide and worried. “What if we starve because of me?” Ah, there it was.

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“I should have gone on that internship with Tsuyu. I knew I needed water training but I figured it could wait because Gunhead seemed more beneficial. I’m so dumb, of course we should be experienced on all fields, we’re heroes. Even Kacchan can use blasts underwater—”

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Katsuki had sloshed his way next to Izuku in the knee-deep water, and took the opportunity to smack him upside the head. “Hey. Fuckwad. The hell you mean, ‘even Kacchan.’”

Izuku blinked rapidly. “I! I just meant—”

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But Katsuki was teasing, and he was tired of Izuku having the audacity to beat himself up right in front of him, so he shoved Izuku into the water.

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Izuku landed on his butt with a plop just as a wave swept over his face, and he re-emerged with a gasp, looking like a lump of seaweed.

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“Kacchan!” Izuku scolded, bedraggled, pout giving way to a grin as Katsuki bent in half in laughter. A stocky leg swept out and wiped Katsuki’s legs out from under him, so that he fell in the water next to Izuku too, and now he was sputtering while Izuku cackled.

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“This was a bad idea,” Katsuki admitted, loathe to air dry in the hot sun, to feel the salt left behind sit and settle like a second skin.

“Aw, come on, Kacchan,” Izuku said, smiling at him like some kind of sea nymph. “Island vacation. We might as well enjoy it!”

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Fucking called it.

+ + +

                            51
                        
They did try Blackwhip in the lagoon, since they really did have nothing to eat. They were there for hours – stabbing into the water with spikes of Blackwhip didn’t work, the silvery fish too quick, Izuku’s aim too off no matter how many times he tried.

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Any aquatic life retreated to the deep sector of the lagoon if one of them even hinted at stepping in the water, so corralling was a bust. Izuku had to take multiple breaks, Blackwhip refusing to manifest if overused, especially outside of battle.

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They ended up with Katsuki laying on his back by the water’s edge, tossing and catching a stone, while Izuku tried one tactic after the other.

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He was on Strategy #4, keeping Blackwhip still until a fish came close enough he could twine a tendril around it and pull it out of the water, when–

“Kacchan!”

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Katsuki shot up at Izuku’s breathless, excited call. He grinned. The bastard had done it – there was a single, violently thrashing fish dropped on dry land by Blackwhip, Izuku’s flushed face behind it.

Izuku was oddly silent. Katsuki looked up– oh.

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Izuku’s eyes were wide, too wide, as he watched the fish flop up and down, side to side, choking and desperate and screaming the only way it knew how. He looked a bit horrified.

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Katsuki felt a bit like an awful person, to not care that much, even if he was only simply capable of not thinking too hard about it. “It’s the same as eating it any other day, nerd,” he said, not unkindly.

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Izuku finally blinked, once, eyes flickering up to Katsuki for a second before returning back to the suffocating fish. “It’s not, though, is it,” he said. His eyes filled with tears, abruptly. “Kacchan, put it back.”

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What– “Izuku,” Katsuki tried. His heart twisted painfully against his will. There was a big difference between stupid Deku tears, and actual pained tears, and Katsuki much preferred the former.

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Izuku was shaking his head nonstop like he could ward off whatever guilt was welling up in him by sheer will. “Put it back,” he choked out, eyes never leaving the life seeping out in front of them, “We can’t kill it, Kacchan, look at it, I– we’re killing it.”

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Katsuki looked down. The fish flopped feebly. “It’s too late now, Deku, it would just die anyway. Oxygen poisoning.” He wasn’t 100% sure this was true, but he doubted Izuku would want to listen about prioritizing lives in his state, and they really needed to eat.

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Izuku glanced at him as his eyes widened further, somehow. “Too late,” he whispered, pitch rising on the last word like a half-baked question, mouth trembling.

Shit, don’t cry, don’t cry, don’t cry– “Fuck,” Katsuki said, intelligently.

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“Sorry, I’m— sorry,” Izuku muttered, wiping his eyes roughly. He turned back to the lagoon with an odd set to his shoulders. “I’ll get— Kacchan needs to eat.”

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Oh, hell no. Something vile and violent twisted up Katsuki’s gut, and he wanted to vomit. “Oi. This is enough for now. Get over here before I kill you.”

“It’s not enough,” Izuku said, eyes on the water. Katsuki didn’t like the blankness in them.

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“It’s fine, nerd. I’ll just explode the fish for more, we’ll take the risk.” As in, Katsuki would consume potentially poisoned fish while Izuku ate the clean one, and hope his body’s natural resistance to whatever the fuck was in his sweat extended to his digestive system.

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And if he didn’t keel over and die, maybe they’d consider Izuku trying them too. Maybe.

Izuku trudged over to where Katsuki was standing, fish wrapped in a big leaf, and Katsuki could see some minute invisible weight had left his shoulders.

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His heart twinged a little. Damn nerd.

Izuku had always been like this. Soft. Not necessarily physically, but his bleeding heart was clearly squishy to the touch, in stark contrast with Katsuki’s more practical mentality.

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Perhaps it came from, or lended to, their differing priorities— Katsuki wanted to win, and if that meant saving everyone, he would do it and be the best. Izuku wanted to save everyone, and if that included winning and meant being the best, he would do it.

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He’d never even killed anyone, in his three years of being a hero; never, except for one single time, when Katsuki was involved. Because Katsuki had been involved.

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Inko had taught her son to value all life, and so he did, because he was precious like that, and now here he was sacrificing himself for Katsuki again.

                            71
                        
Katsuki had never really purposely killed anyone either. But he would, if it came to it. [He’d do a lot of terrible things for Izuku].

Perhaps killing someone together absolved them both of the sin. Perhaps it only doubled the weight.

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Whatever the case, Katsuki was not going to sit here and watch Deku’s big eyes go all sad watching something die, or go blank while he took it upon himself to kill it. Katsuki would rather starve.

                            73
                        
But Katsuki starving meant Izuku starving, so it looked like they would just have to take calculated risks until someone got here to take them home.

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Katsuki crouched and stuck his hand in the water, waited until the fish were no longer suspicious of it and one or two were within blast range, then let off a controlled explosion.

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He knew the flammable elements of his sweat were insoluble in water, and would thus explode, but he didn’t know the physics of the new underwater blast radius, or where the waterlogged heat would be enough to kill a fish.

                            76
                        
Katsuki didn’t let a big enough explosion off to make a big splash, since he didn’t want to terrifying their potential food. He was making a lot of guesses, here. But after a couple moments, a fish bobbed to the surface on its side, and Katsuki sighed, relieved.

                            77
                        
They had food for the night. Izuku was looking better, mumbling about liking plain fish anyway and something about fire starters. The sky was clear. Maybe they’d really be okay.

+ + +

Katsuki was beginning to think maybe they would not be okay.

                            78
                        
It had been too many days. Just five, actually, but he and Izuku were Pro-Heroes, accustomed to keeping their bodies in top shape, which meant eating a lot in a day to match their workout routines. The cut to zero was getting to them.

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They’d had some biscuits on the plane before everything went to shit, and they hadn’t even been good, so Katsuki had given his to Izuku.

Katsuki would give his left arm for some shitty airplane biscuits right now.

                            80
                        
The fish had learned fast for some fucking reason, so by the third day of setting off careful explosions in the water to catch food, the water edge was all but devoid of edible marine life,

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all the fish having retreated, presumably, deep into the depths of the creepy fucking dark hole in the center of the lagoon.

                            82
                        
Katsuki had even dared to venture out to it, bracing against shudders at the endless darkness below him, and tried to catch fish from there. But no dice— either his body treading water scared them away, or his controlled explosions couldn’t reach where the fish had gone.

                            83
                        
Katsuki still didn’t want to risk poisoning or blowing up their only water supply, so he gave up, and Izuku took a turn fishing. No luck.

That was two days ago.

Hunger was a funny thing, a scraping ache, persistent and relentless. Annoying.

                            84
                        
Izuku was one of those fucked up people who could ignore their hunger, a habit probably developed from years of distractedly skipping meals, but Katsuki had always listened to his body to keep himself healthy. He wasn’t used to this, outside of rough missions.

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Missions that never involved being beat down by a tropical sun in unison with a depletion of food. It goes quiet, after a while, Kacchan, Izuku had told him, when Katsuki asked why he didn’t seem to be wracked by hunger pangs like Katsuki was.

                            86
                        
Katsuki didn’t really want to ask how he knew that, why he sounded so used to it. He resolved to keep a closer eye on him once they got back, though.

                            87
                        
They’d taken to exploring the island in search of food sources, and were currently resting after having trekked for most of the day. They had to keep a balance — saving energy, and using it to find food. Gambles and risks.

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One thing survival books had left out — nothing mentioned how they’d get so fucking bored. There was jack shit to do on an island once every necessary expenditure they could manage had been established.

                            89
                        
It was near midday and they were lazing under a cluster of palm trees, Izuku mumbling to himself, Katsuki letting the hum of it lull him to sleep. He hoped a nap would distract him from the restless hunger that had set up camp in his entire torso.

                            90
                        
He dozed off for a bit, too hungry to really relax. Giving up, he tipped his head to the side to look at Izuku, head rolling on the flat rock it was laid on.

“Nerd.”

“Hm.”

“Let’s do something.”

“Like what.”

“I dunno. Do any of your quirks work right now?”

                            91
                        
Izuku had told him, once, that Blackwhip actually took a lot of energy to make and control. It’s not mine naturally, Izuku had explained, so no matter how much he practiced it still took a lot of effort to use.

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That’s why it’s easiest when I’m emotional, he had added thoughtfully. Without adrenaline it’s really tiring.

Blackwhip materialized weakly, short bare wisps with little form. Izuku let out a shuddery breath and gave up. “Sorry, Kacchan.”

                            93
                        
“‘S fine, nerd. Not your fault.” Not anyone’s fault but the stupid storm that blasted their plane out of the sky. How does that even happen? Katsuki’s head hurt. He reached for the water, then changed his mind and held it out to Izuku instead. “Drink.”

                            94
                        
Izuku looked at it blearily. “I have to pee.”

Jesus Christ. “Then pee, idiot.”

Izuku hobbled a good distance away. To a different spot than they had been using, it looked like, deeper within the trees.

                            95
                        
He passed out of Katsuki’s sight and Katsuki clenched his eyes, his jaw, and his fists at the violent urge to go after him, keep him where Katsuki could see. It was to this tensed form of Katsuki that Izuku returned, hopping a bit in excitement.

                            96
                        
“Kacchan! I found something!” he cheered, notably weakly, grabbing Katsuki’s arm to pull him up and in the direction he’d come from. “Come look!”

you can read the rest rn here! archiveofourown.org/works/54597775

part 2 in thread form coming soon! ty for making it this far! your comments/qrts add multiple years to my life :)

kiwi 🍓🇵🇸 ⟡ ⋆｡˚@comradekiwi__

#bkdk plane crash/island fic part 2!

It was a deceptively blessed fruit tree. Deceptively, because it was perched inconveniently in a mess of sharp rock, roots clawed tight around a particularly large, jagged boulder, squashed into the rockside about 20 feet up from the ground.

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kiwi 🍓🇵🇸 ⟡ ⋆｡˚@comradekiwi__

hi new followers!!! welcome!! if ur a minor pls come back when ur 18 </3 happy bkdk-ing MWAH also!! while ur here pls check out these accounts!! @CareForGaza @PiousProjects @Timesofgaza @GazaDirectAid and gazaesims.com! more info below <3

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kiwi 🍓🇵🇸 ⟡ ⋆｡˚@comradekiwi__

#bkdk plane crash/deserted island fic part 3!

“—akugou. Bakugou!”

Katsuki shot up, heart threatening to race right out of his chest. Deku. Where was Deku?

He had to blink a couple of times to clock the red head in front of him.

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archiveofourown.org/works/54597775 <3

#bkdk Their plane crashed. Of all the shitty D-list movie tropes...

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