For the Sake of Survival [Sea Emperor x Reader]

Prologue: Planet 4546B

CAUTION : this story will contain massive spoilers of Subnautica's main lore and Endings.

A humanoid figure took a step. Clenching their infected (skin-color) arms, a (gender) human stood confidently in the Precursor's Primary Research Facility.

(Y/n)'s chest was rising and falling rapidly. They stood in silence in front of a gigantic auditorium with a pool in the middle of this alien structure - the entrance to the Aquarium.

The (fav-color) pron suit was standing right behind the Human (gender), scratches and marks visible on the titanium surface that once used to be new and smoothly crafted. The gigantic alien facility was empty, no signals of any life forms, besides the furious Dragon Leviathan outside in the active lava zone.

The (eye-color) orbs blinked, as (Y/n)'s muscles tightened in anticipation.

After all that time - the struggles, the pain , the horror and the risk that (y/n) went through on this miserable abounded planet finally led them to this place - The heart of Precursors' Researches. The 28 year old (Gender) took a deep breath as they closed their eyes upon recollecting the memories.

(Y/n) (Y/n) was a 28 year old (gender) engineer abort the Aurora from Planet Earth. Followed by many other people and citizens, the ship took humans around the galaxies for following planet colonizations. That is until the catastrophic incident.

The Aurora didn't malfunction nor did it run out of fuel - it was shot. Before anyone could've noticed , huge explosions ripped the ship apart, causing it to fall into the depth of the ocean upon entering the atmosphere of Planet 4546B.

And it was no accident.

(Y/n) was the only survivor from Aurora. Days of crying hysterically while shaking in fear drove the poor (gender) insane. But unfortunately, they had to take action before any more accident may occur. Without the technology that any human legally owned - (L/n) wouldn't last long, but Alas with (Y/n)'s rich knowledge about safety, crafting and engineering - the (gender) quickly got hold of surviving on this Alien Planet.

Everything went smoothly, softly saying. The Young (Gender) managed to hunt fishes such as : peepers and bladderfish or food, hide away from sand sharks , bone sharks and other predators, and scavenge for resources across different biomes. Different lifeless pods and wreckages were met halfway through, but besides useful materials , updates or data logs - (Y/n) didn't find any survivors.

The young (Gender) thought that they found a solution to get back home or call for help - until (Y/n) found out that this planet wasn't as abounded as they thought.

Befor their own eyes - (L/n) discovered Alien Life form and structures. Not just any Alien Fish, but a 1500 years old Alien Structures build all around this planet - The facilities and pipes were build of an unknown metal alloy with unprecedented integrity , much darker and stronger than any metal on Earth. The foreign patters were build with luminescent green lights followed with many different Alien Data logs. Surprisingly, (Y/n)'s scans showed that many of these facilities were in fact automated and still powered with powerful resources. The suspicion and mystery continued, driving (Y/n) deeper into this rabbit hole. Or shall we say - deeper into this Leviathan hole.

(Y/n) realized they might be not alone.

Weeks turned into months as (y/n) (L/n) continued to analyze and search for clues about the so called 'inhabitants' of this planet : are they even here ? Who built it all ? Where are they now ? What could be the cause of their moving ?

Until one day, the 28 year old discovered the gigantic Alien Gun. On that day, all hopes of survival and going back home seemed impossible. Aurora , Sunbeam , Degasi was destroyed by the Precursor Gun , The Quarantine Enforcement Platform , due to infection.

The Kharaa.

And (Y/n) was infected too, just like most of the life form on this planet.

Thus, (Y/n) (L/n) came all the way onto the core of the Planet - to the Primary Research Facility. It was clear now that the Peepers traveled through the Alien Pipe System, bringing flora seeds to the aquarium, leaving with small amounts of Enzyme 42 which they distribute at the surface. This system allowed a small amount of life to survive on the planet. However What trained them to such an odd and trained behavior?

It was clear that a much intelligent and immune being was lurking somewhere in the depth of the cold ocean, sensing a certain (gender) Human seeking for help.

Each clue and data log was important at this point - the energy resources, the Precursor Cash, and most importantly , the Cure of the Kharaa disease - Enzyme 42. The half translated alien data all point (Y/n) to one place, one supreme being.

The Sea Emperor Leviathan.

Countless analysis and hypothesis proved that the only cure that may even exist is in this very center of the Primary Containment Facility, where so called 'emperor' was held captive.

(Y/n) cursed every Precursor and Reaper Leviathan that day, as fury boiled within their blood upon discovering that this disease may kill them faster than anyone can imagine. However, despite the tantrums, the hard work of building and upgrading different machinery - (L/n) promised themselves that they shall defeat this infection, get to the core of this damned place , in order to fly away.

But on the other hand, (Y/n) wasn't worried about the darkness of the ocean, or the bloody Leviathans that wanted to devour them, nor the Active Lava Zones. What worried the young (gender) was...

Is the Sea Emperor Leviathan even alive ?

At this point, Nothing really mattered for the devastated (L/n) whom suffered a lot to get all the way to this Facility. Their smooth (skin-color) was now pale with visible green oozing patterns. If the Natives abounded everything years ago - The Sea Emperor is approximately one thousand six hundred years old, and is suggested to have far surpassed its natural lifespan? Whether he's immortal or immune, this gigantic aquarium could be empty by all means.

(Y/n) shook their head, their dry (hair-color) hair bouncing from side to side. they didn't want to think negatively - not now. Whom ever this majestic being was, It was (L/n)'s only Savior.

Taking a final glance at the Aquarium's Entrance , the (gender) human made sure the oxygen tank was full and ready as they placed their helmet mask back on top. It should last several good hours in water.

Maybe (L/n) was a pathetic mortal human being - but they survived alone and they won't stop now. (Y/n) will end this quarantine no matter what.

But little did (Y/n) know, Somebody was waiting for them down there for a very long time.

----

CAUTION : this story will contain massive spoilers of Subnautica's main lore and Ending.

Reader is Gender-Neutral and takes the role of the main character/player of the game.

So for those who are interested, This will be short story about YOU and the Sea Emperor trying to help each other, which technically means it's just a Platonic Ship or just fluff :P Might be slow updated due to the Game's implemented elements, At least the full release of the game is on September.