Izuku gasped as his head broke the surface.

He was alive. For now, at least. Looking around, he could see the wreckage of the plane he'd been on sinking into the waves as fire raged nearby on the debris. He had to move. He'd die if he stayed in the water too long.

An island. There's an island nearby!

Izuku picked up the pace and began to swim for the island, which proved to be more than he bargained for. A massive black lighthouse with marble stairs, jutting straight out of the ocean. With no other option, he lugged himself out of the water and to the second landing of the staircase, panting as he sat down. Seawater had logged his clothes, making it difficult to move as he tried to rest from his ordeal. From what he could see, nobody else had made it off the plane. They were all dead or drowning trapped in the cabin. His stomach twisted at the thought of so much death.

As time passed, his white button-down shirt, dark brown vest, and brown corduroy pants dried out, allowing him to feel more comfort as he stood up and inspected his salt-crusted black boots. He needed to figure out where he was—and more importantly, how to get back to the mainland. There was no way he'd be able to survive out here alone. The island appeared to offer no shelter other than the dark tower that loomed overhead, no food, no clean water. So he cautiously continued up to the very top of the stairs, where he discovered a door leading into the tower.

It was slightly ajar.

Every fiber of his being was screaming for him not to go in, to just wait it out for some other plane to pass over. But at the same time, something about the inky black within the tower called to him, beckoning for him to enter and explore its depths. He gripped the frame. Deep down, he knew that once he passed through that door, once he entered the tower, there was no going back. This was going to change him. And with one final breath, he entered, closing the door behind him.

"NO GODS. NO KINGS. ONLY MAN."

That was the first thing he saw once the inside of the lighthouse lit up, golden-colored words elegantly stitched onto a crimson banner. The banner itself was held by an enormous golden statue of a man that loomed over Izuku's head. He shuddered in fear and disgust and continued to look around. A second door was to his left, but it was locked shut. To his right, there was a set of stairs heading down, made of the same marble as the ones outside. He descended down those stairs, feeling his heart pounded as he continued downwards.

Then, at the bottom, he discovered an old-fashioned submarine—one from the era when they were called 'bathyspheres'. It was big enough to fit a few people in it, maybe five or six if they squeezed. There were no other options. Maybe he could figure out how to pilot it and make his way back to the mainland. It was a longshot, but it was the only shot he had. He entered the vessel and pulled a lever and the machine hummed to life. It began to descend, all on its own.

"No. No no no no no…"

Izuku tried in vain to reverse the lever, but all he could do was watch helplessly as signs told him how deep he was. 10 fathoms. 18 fathoms. 25 fathoms. Then the window went dark and a film began to play.

"Is a man not entitled to the sweat of his brow?" said the narrator. "No! says the man elected. It belongs to the people. No! says the man in the Vatican. It belongs to God. No! says the man in Moscow. It belongs to everyone."

He squinted at the images of a man being tormented by first an eagle, then a giant hand, then a hammer and sickle.

"What the hell…?" he whispered.

"I am known only as All For One. I rejected those answers. Instead, I chose something different. I chose the impossible. I chose… Camino."

The film disappeared and Izuku gazed in awe out the window at a city built entirely underwater. His jaw dropped at the sight of a whale giving a building nothing more than a passing glance, as if it had learned to live with the construction. Neon signs lit up the landscape to advertise art galleries and clothing stores and bars, glass tunnels acting as streets between buildings. It was all very reminiscent of the 1920s in America, beautiful yet somehow threatening and almost certainly hiding something.

"A haven for art, science, and industry. Where the people who call it home are truly free to be who they want and do what they wish. This is our city. And if you give it time, Camino can become your city, too."

Suddenly, the bathysphere lurched and he realized that it had attached to some kind of landing mechanism. Overhead, neon letters lit up as he passed.

ALL GOOD THINGS

OF THIS EARTH

FLOW

INTO THE CITY

Finally, it stopped and rose. The shortwave radio on the wall crackled to life as he picked up a conversation.

"It's here! You want me to get it?"

"Careful, Twice. We don't know what kind of person's in there."

"You don't have to worry, Shigaraki. I've got this!"

"Hey, you!"

"Me?" asked Izuku, picking up the radio.

"Yes, you. What's your name, kid?"

"Oh, um, I'm… wait, do I use my real name?"

"Nah. That won't do in Camino."

"What do you mean? It seems so nice."

"Wait 'til the damn bathysphere stops. Then you'll get it."

As if on cue, the vessel stopped to reveal a station… a station that was in complete ruin. A man in a mask ran toward him and Izuku backed up just as a blonde-haired woman pounced on the masked man and plunged a large knife into his neck. He collapsed.

"Got you got you got you!" she giggled. "Your stuff is mine!"

She leapt away, still giggling and skipping as she went. Izuku felt his heart pounding in his throat, fear filling him.

What kind of place have I stumbled into…?

"You still think Camino is a nice place? Your name, kid. Code name."

"I'm Deku." It was the first name that popped into his head for a code name, his childhood nickname that he'd been tormented with for years.

Now it could keep his identity safe.

"Well, Deku, I'm Shigaraki. Nice to meet you. Now, listen, this place is hell on Earth. You need to help me and I'll help you get out of here."

"Should I trust you?"

"I'm your only option. Isn't that how you got here? Nobody on the surface willingly steps into those bathyspheres. I guarantee it. Obviously, you didn't have a choice. Now, step out and go find that girl you just saw. She's what we call a splicer."

"Splicer. Like gene splicing?"

"Exactly. I'll explain more after we get rid of her. Go draw her out into the open and I'll take her out. Take the radio with you so we can communicate"

Hooking the radio to his belt and securing it, Izuku exited the bathysphere. His initial assessment of being in some kind of an abandoned and destroyed station appeared to be correct as he passed rubble and electrically-powered hatches that acted as doors that seemed to be… out of order. The whole place must've been beautiful not too long ago, but now it was awful.

"Ooh, new blood!" giggled the girl's voice from the shadows.

"Don't worry. I.. have her!"

Lights appeared in front of Izuku, showing the blonde girl with her hair in pigtails as she hissed at the sudden brightness.

"How do you like this, you useless little brat?!"

To Izuku's complete shock, a flying robot came out of nowhere and began shooting at the girl as she climbed the wall. Effortlessly, perfectly, and she was out of sight.

"Great. Now, would you kindly find a wrench or a crowbar or something to defend yourself with? You'll need it."

A switch was flipped in Izuku's head at the words would you kindly. His gaze immediately dropped to a wrench that was sitting next to an open toolbox and he picked it up, giving it a few experimental swings before heading for the door that was before him in the rubble. Going through it, he looked around—only for a man to come charging at him, screaming and swinging a bat. Izuku swung the wrench at him on instinct, smacking the man in the head and killing him pretty much instantly.

"Dammit… no…"

He almost dropped the wrench, but he told himself that the person had been trying to kill him. Izuku had just struck first.

Continuing on, he came to what else but a marble staircase. He was really starting to have a dislike for them. This time, however, there was something at the top. It was… a vending machine? Standing to either side was the image of a little girl in a pink dress with long, silver hair and reddish eyes. She was adorable. Sitting right there in the receiving slot was a syringe filled with a glowing red liquid.

"Ah, I see you found some ADAM. Take it and inject it into your wrist."

"Wait, what?!"

"Just do it! You need this shit!"

Izuku gulped and took a deep breath as he stabbed the needle into his left wrist.

Pain immediately shot through his entire body and he screamed in agony, staggering backwards. Sparks of electricity flickered over his skin and crackled and popped like lightning.

"What's happening to me?!"

"Your genetic code is being rewritten so you can carry Quirks. Trust me, you'll thank me later…"

The world went dark.

"Look, Eri. There's an angel."

"H-he's not… he's not an angel yet. He's still breathing."

"But he'll be an angel soon and we can take his ADAM."

"I don't want to."

"Eri, darling, we've been over this…"

Izuku weakly opened his eyes to see the little girl whose image had been on the vending machine standing there with a masked man. She looked terrified as the man grabbed her arm and began to pull her away. Once they were gone, Izuku stood up and dusted himself off… then watched as lightning shot from his fingertips. He yelped, then realized… this must've been what Shigaraki meant by a Quirk.

"Now that you're a bit more well-armed, let me just tell you what I need you to do. My sister—she's in this place called Ryujin. Help me find her and get her out of here safely. You do that and I'll help you."

"What about that little girl?"

"You mean Eri. Forget her. You can't save her. She's a minion of All For One. He ran this place into the ground even though he built it."

That didn't feel right. Part of Izuku wanted to run after Eri and save her from the mysterious man who was forcing her to take people's ADAM. But at the same time, if she really couldn't be saved… then he had to try to get out of here by any means necessary. He used his new ability—Electroshock, Shigaraki had called it—to open a malfunctioning door and enter one of the glass tunnels he'd seen from the bathysphere. It was a straight shot to where Shigaraki was telling him to go.

Until part of the plane smashed through the glass.

Izuku climbed through the cabin and out a back door, rushing for a door at the end of the hallway. That door locked behind him and he found himself in an elegant-looking foyer with red velvet walls and gold accents. It was still in disrepair, however, with water leaking from the ceiling and creating waterfalls that flooded parts of the room.

"DIE!" roared a voice. Izuku saw a man running towards him.

"Quick. Hit him with the electricity and smack him with the wrench! The one-two punch!"

The green-haired young man did as he was told and his attacker was dead on the floor.

"Listen, I can tell you're not comfortable with killing these people. I understand. But they're not human anymore. They're splicers. They've used ADAM so much that their genetic codes are fractured and destroyed. Search them after you kill them to get anything you might need—ammo, a first-aid kit, cash, and most importantly, EVE."

"Okay. I think I'm starting to get it. ADAM rewrites my genetic code, and using too much will turn me into a splicer."

"Right."

"So what's EVE?"

"ADAM gives you new Quirks and EVE is used to power those. You don't want to run out of EVE, trust me."

"Noted."

"Oh, and one more thing: you're going to need a lot of ADAM to get out of here. I'll tell you how to get more later, but for now, just try to get to Ryujin."

Izuku gulped and searched the corpse of his victim. The man carried a glowing blue syringe labeled 'EVE Hypo', which Izuku took and placed in his bag before continuing onwards. There were a few more splicers that he quickly dispatched, finding first-aid kits and more EVE. Eventually, he found himself on the rafters of a theater. Looking down, he could see Eri kneeling next to another corpse. She held a giant needle that had some kind of bottle attached, and that bottle was filling with red liquid that he recognized as ADAM.

He made his way down a staircase and peered back into the room. A skeletal-looking woman came through the door and ran towards Eri, wielding a pistol and aiming it at the little girl. Eri screamed… and a man heavily armored in an old-fashioned diving suit came out of nowhere and punched the woman to hell and back. Izuku cringed as the little girl cheerfully greeted her protector and hugged the man. Eri and the man then left the area, the former skipping along and humming.

"Oh, another Eri. Joy."

"Another Eri?"

"Clone. The Eri you met earlier was the original. They all started out as normal little girls but now… they're monsters. Every single one of them. Only way to tell the difference is the protectors. The clones have those generic divers called Papas. If it's the real Eri, Overhaul will be with her."

"God… who did this…?"

"All For One and his team of scientists. They wanted a way to quickly and efficiently harvest ADAM and well… Eri was born with the Quirk to do it. So they cloned her to make as many as possible."

Izuku continued on, finding Ryujin closed off to him and being forced to make his way through the terrifyingly-decrepit and sufficiently creepy Medical Pavilion. He hated hospitals; they brought back memories of a childhood where he was in and out of the white halls that smelled of bleach for broken bones and illnesses of all kinds. It didn't help that this one specialized in plastic surgery and Quirks. And splicers were everywhere, screaming and lunging at him from the shadows in an effort to kill him. Thanks to Electroshock and his wrench (as well as a pistol and machine gun that he picked up before heading deeper into the once-sanitary place), he was able to keep the splicers at bay and even pick up quite a bit of EVE.

"How do I shut off the security at Ryujin?" he asked Shigaraki as a machine-gun turret he'd managed to hack fired at splicers that were trying to chase him.

"You'll need the key from Daruma Ujiko. He's the doctor who caused the splicers to be… well, splicers."

"I'm guessing he did it for fun."

"Partly. But he's obsessed with creating the perfect standard of beauty. If you want to shut off the security, you'll need to get the key from him. Simple as that."

"Thanks. I'm heading there now."

Continuing onwards, Izuku quickly found the doctor. Even though he was perfectly able to take the man on, he was cut off by a grenade knocking down a sign and blocking where the doctor had escaped. A splicer doctor lobbed more of the explosive objects as Izuku rushed back the way he'd came. Panting, he slumped against the metal-and-glass wall of the tunnel to try and catch his breath. Maybe he needed another Quirk—something bigger, more able to take on grenade-throwing doctors and help him take out that damned sign. He stood up after a minute and continued back, exploring the crematorium that wasn't far off.

"Watch out for security cameras, Deku. They spot you, All For One's blasted security bots will be all over your area in a matter of seconds. Try to hack them if you can."

Sure enough, there was a camera. Izuku dashed out when it was turned away from him and hacked it like he'd hacked the turrets and a couple of security bots earlier. Heading upstairs proved to be beneficial when he found a Gather's Garden machine that contained a bottle labeled 'Incinerate!'.

"Attention, my friends," came All For One's smooth voice over the intercom system. "We have a parasite in our midst, seeking to ruin our utopia. A thousand ADAM to whomever kills him and brings his body to me."

Splicers swarmed from all over, screeching as they slammed at the room Izuku was inside. He glanced at the floor and spotted an oil slick. Quickly, he snapped his fingers and the oil lit up, doing the same to the splicers outside. When the fire died down, he slipped out and headed down to the bottom floor, intending to explore a little more. After all, as good as the Quirk was, it wouldn't do much against the blasted sign in the doorway.

Down there, he found the only way forward frozen over. He used Incinerate! to melt the ice and found a splicer waiting for him. Izuku killed him just as he had the others and continued forward.

Suddenly, he was ambushed by half a dozen splicers. He used his machine gun and his pistol to take care of them before picking up a shotgun and some ammo. In one of the dentist offices down on that floor, he found a bottle labeled 'Telekinesis'.

Now… maybe thiscould help me out…

Having found as much as he needed, he rushed straight for the surgery area. He was able to blow up the neon sign using a grenade thanks to his new telekinesis ability. Izuku continued on and found the doctor waxing poetically about beauty and how difficult his patients were as a woman struggled against restraints in the surgery theater beneath the doctor's knife.

"I'm trying, Aphrodite, but she won't stay still!" Ujiko stabbed the poor woman in front of him and she stopped moving. "Try as I may, they never turn out right! This one, too fat! This one, too tall! This one, too symmetrical!"

Izuku met the crazed doctor's eyes through the glass of the viewing room.

"What's this? A new one? He's so ugly. Ugly. UGLY!"

Izuku ducked as the doctor began firing a machine gun at him and the younger man rushed into the room. Ujiko continued to scream as he chased Izuku around the room. Finding a health station, Izuku hacked it as a precaution before taking out his shotgun and loading it. Sure enough, Ujiko rushed down to do battle and Izuku shot him five times. Ujiko then tried to use the health station… only to be gassed by the very thing he'd probably had a hand in creating. Within moments, the madman was dead in the flooded space.

Key in hand, Izuku headed back towards the security room and was faced with a tunnel collapse. He quickly ducked into a side room and saw one of the heavily-armored men he'd seen with Eri earlier fly backwards in an explosion. Dead.

"Quick! Now's your chance to get some ADAM!"

Izuku slid into the room and found a splicer cornering an Eri. She was sobbing and fell backwards in fear as the splicer held up a pistol and a wrench.

"Now, it's just you, me, and all the ADAM I can drink," the splicer chuckled.

A crack rang out and the splicer fell forwards, dead.

"STAY AWAY FROM THE LITTLE ONES!"

Izuku's gaze immediately went to a balcony overhead, where a young woman—about his age, he guessed—was brandishing a gun. Her brown hair just barely brushed her shoulders and a metal pipe floated by her head. Chocolate-brown eyes met his own green and the brown narrowed.

"Watch it, or you're next!" she snapped.

"Easy, Dr. Uravity. He's just looking for enough ADAM to get by."

"Not at the cost of an Eri."

"They're not human. You made sure of that."

"And now I'm trying to undo my mistake."

"Don't listen to her, Deku. Go get some ADAM from that cloned brat. Kill her."

Izuku gulped. He needed ADAM to survive, didn't he…?

"Wait!" He looked up at the doctor, who held up a red bottle. "Use this. Free them instead of killing them. You might not get as much, but I'll make it worth your while."

He drank the ADAM that Uravity had given him and approached Eri. She was shaking, her little arms held over her head as she whimpered and cried, sobbing for the armored behemoth that had been blown through the window.

"Hey," he whispered. She snapped her gaze to him and he saw fear in her crimson eyes. "I'm not going to hurt you, I promise. Come here."

He set aside his weapons and extended an empty hand to her. She shook as she held out one of hers—so tiny in comparison to his—and clutched his hand. Gently, he pulled her into a hug and stroked her hair. She began to glow red and looked much better by the time they pulled apart.

"Thank you," she stated, smiling. Eri then handed him some ADAM. "I'm going to go wait with the others now. The real Eri should be freed. And then we can all be safe."

She ran off and Izuku stood up.

Surprisingly, Shigaraki was silent on this development.

Continuing on, he found another Guardian walking with an Eri. He pulled out his shotgun and loaded it. After all, how could he save Eri if the Papas were keeping him from touching any of them? The Papas had to die. Besides, he had a feeling they would prefer death to their current purpose.

Eight shots brought down the Papa.

And Eri gave him even more ADAM.

"Overhaul will be the hardest Papa," she warned Izuku. "He won't go down easily, but… you won't give up, right?"

"Right. Just wait. I'll take care of everything."

And he was finally able to head to Ryujin.

So, for those of you who didn't figure out what this story was based off of, it is based off the game Bioshock. If you don't know what Bioshock is, it's a first-person-shooter with a 1920s art-deco aesthetic as you explore the underwater city of Rapture founded by businessman Andrew Ryan and populated by splicers (humans who have mutated their own genetic code to the point where their sanity has severely suffered), Little Sisters (abused little girls who are forced to collect the substance that mutates the splicers), and Big Daddies (splicers who have been fused to clunky diving suits whose main purpose is to protect the Little Sisters by any means necessary).

Even though this story is based off of Bioshock, it's not going to follow the plot to the letter. I'm putting my own spin on it because why not.

Next time: Izuku encounters spider splicers and Papas, along with the grim reality of Camino's existence.

So long and thanks for all the fish!