Author's notes: Alright so just a PSA but I know absolutely nothing about Captain Marvel comics so I'm just going off what I saw in the movie (and what I remember like I only saw it once so far soooo) anyways I'm in love with Carol but also have an unhealthy obsession with Jude Law so I have a love/hate relationship with Yon-Rogg even though he's a bitch, imma make him a little less evil and this is gonna be kinda dark so apologies for that...I wanted something different but this is what my brain wrote lol anyways enjoy!

You ducked as a fist came flying at your head, a smile growing on your face as you knew exactly what your opponent's next move would be. Your arm darted out, ready to slam into his stomach, but before you could make contact, your legs were swept out from beneath you, and you slammed to the ground.

Your head throbbed where it had made contact with the floor and as you tried to push yourself up, your arm screamed in pain and you crashed back to the ground with a yelp. Taking a deep breath, you blinked away the sparks of light dancing across your vision, letting out an exaggerated groan as a foot lightly kicked your side.

"You better not be dead, the Supreme Intelligence would kill me for murdering her second best warrior."

"Second best?" You snickered, pushing aside the pain as you shoved yourself to your feet.

Yon-Rogg smirked at you, immediately getting back into fighting stance, motioning for you to do the same.

Flashes of light were still sparkling across your vision and your body felt as if you had fallen 10 stories, but out of habit, your leg slid back as you lifted your fists.

"Y/N!"

Relief slammed into you as you turned. A Kree guard stood at the door of the gym motioning for you to follow.

"This isn't over." Yon-Rogg pointed at you, a playful smirk growing on his face.

You stuck your tongue out at him and flipped him off, before quickly following the guard out into the hall.

You and Yon-Rogg had been friends since your first day on Hala.

The second you landed on planet, you were placed in training, your supervisor being THE Yon-Rogg himself. All the other trainee's around you kept talking about how he was the Supreme Intelligence's favorite and how he was a hard-ass to all the new recruits.

But that didn't scare you.

If anything it made you want to befriend him more.

Within five seconds of meeting him, you realized he was one of the most serious people on this planet. And you made it your personal goal to get him to laugh by the end of the day.

It only took you ten minutes.

His laughter echoed across the training room, all the trainees freezing and watching in confusion as he struggled to catch his breath. You stood back, your arms crossed, a wide smirk on your face.

However, the laughter only lasted for a few seconds before he stopped abruptly, pulled himself together, and yelled at everyone to get back to work.

But from that moment you became quick friends.

He volunteered to personally train you. And soon you were quickly rising in the ranks.

You balanced each other out. You were outgoing where he was quieter. And he was more serious where you were more emotional. But you respected each other's strengths and weaknesses. He taught you how to focus and train while you taught him how to let loose and dream.

But your friendship didn't stop you from being competitive. You both fought for the best positions and the best missions. But as you continued to be promoted, you were rarely put up for the same ones. You became more of a spy while Yon-Rogg was the definition of a Kree soldier.

Yon-Rogg realized quickly that you struggled to blindly follow orders. You liked knowing all the facts. But that wasn't how missions typically worked. You would be given an order and were expected to follow it without question. But what if that order had consequences?

You didn't like hurting people. You were a spy. You lied, you manipulated, but you rarely killed. You didn't see the same death and destruction like the other agents, like Yon-Rogg.

He would often lightly scold you for following your heart too often. And you would reply by calling him robotic. Neither of you meant anything by it. But sometimes you could see the sincere worry in Yon-Rogg's eyes and he would warn you that your bleeding heart was going to get you in trouble.

But you knew that he would always have your back should you need something. He would always keep you safe. And you would always keep him safe.

A few days later, you were in the middle of gathering intel on a planet bordering Hala when you received a message ordering you to take out your informant.

Your steps faltered as you read the message over and over again. And against orders, you quickly sent a message back asking why. The only answer you received was: "double agent".

Your heart dropped. You knew for certain that your informant was innocent. You had been working with her for years and she had never led you astray. You knew the only reason she helped you was to make money to support her children. She had no side in your war.

You weren't sure how long you stood motionless in the middle of the street. It wasn't until you heard the beeping of a cruiser behind you that you quickly stepped onto the sidewalk, the insistent beeping coming from your comm echoing in your hand.

The message read, "Execute target. Confirm?"

You swallowed hard before confirming.

Your heart was racing as you tried to come up with a plan. The last time you had been ordered to kill someone had been two years ago. You had lied and helped that man into hiding. And you had never been found out. Never told anyone. Not even Yon-Rogg. Part of you wanted to believe that if you had, he would have covered for you, but you weren't sure. Even though he was your closest friend, this war had been his life for decades. You didn't know what you would do the day he chose it over you.

But nothing was going to stop you from saving this woman. With no time to form a plan, you would have to wing it.

When you made contact with your informant, you made plans to meet up behind your usual bar. After making sure you weren't followed, you slipped down the alley, your hand on your blaster. As you caught sight of the hooded woman leaning against the wall, you relaxed.

You whispered the code word, but before hearing it back, you began to beg her to leave and never return, realizing far too late that the woman in front of you wasn't your informant.

Turning around to run, you ran headfirst into a Kree agent. Knocking him on the ground, you turned the corner seeing your informant across the street. Just as you were about to scream to her, something hit you hard over the head and you blacked out.

When you woke, smoke was billowing from a fire in front of you. The sparks burning against your face as you laid against the sandy ground.

You weren't in the alley anymore. The desert sand blew around you, no civilization to be seen for miles. You began to struggle to get up when somebody kicked you hard in the stomach, pain splintering through you. All you could do was pray they hadn't broken a rib.

Another foot came down, slamming your head into the ground, a rock tearing into your forehead.

Brushing the stream of blood across your face, you blinked ferociously trying to focus your eyes. The smoke burned as you peered around finally catching sight of your informant across the fire. The woman was terrified. She was kneeling on the ground, her body trembling. Her mouth moving nonstop, begging, pleading to the Kree agent's standing next to her. But they remained motionless, their blasters aimed at the back of her head.

You had walked into a trap. This mission had been a test. And you had failed.

Someone spoke, their voice muffled. You strained to hear what they were saying, but all you could hear was the pounding in your head.

Before you could prepare to defend yourself, the Kree agent's surrounded you. They grabbed your arms and hauled you up, forcing you to your knees. You began to fight back even as your body screamed in pain.

You managed to get one of the agent's on the ground, but you just weren't fast enough. Your legs were kicked out beneath you and you were pinned to the ground, forced to watch in horror as one the agent's aimed his blaster at your informant's head.

You screamed. And he pulled the trigger.

Defeated, your body fell limp. It was over. You were as good as dead.

But as if it wasn't enough to watch the woman you had tried to protect die, one of the agent's threaded his hands through your hair and hauled you up, forcing you to look at the woman lying on the ground.

Another agent came around and began speaking to you and when you didn't look up he grabbed your chin forcing your eyes to meet his. As he began to repeat what he said, you spit in his face, barely flinching when he punched you across the face.

And this time as you laid silently on the ground, they left you there as tears burned in your throat.

You weren't sure how long you remained there, the fire still burning hot across your face.

You welcomed the pain and prayed for the darkness to come.

After a while, you felt your limp body being dragged against the ground, the rocks buried in the sand, beating into you, birthing more bruises.

You knew you had made it back to the ship, when the ground became smooth and solid beneath you, a welcome relief to your body.

The two Kree agent's stopped abruptly, your limp body jerking in their hold, a groan escaping from your throat.

Loud footsteps echoed across the empty walls in the hall. Two boots stopped in front of you. And you swallowed hard before looking up and meeting Yon-Rogg's eyes. They were dark and hard. And in that moment, you couldn't find one inch of the man you knew.

You flinched as his arm moved forward, expecting his fist to slam into your face. When it didn't, you hesitantly met his eyes once more seeing the horror on his face as he looked from his hand to your beaten body.

He waved his arm, motioning for the guards to release you, but when they didn't, Yon-Rogg swallowed hard before nodding minutely and leading the way into the Supreme Intelligence's quarters.

And the only thing on your mind in that moment was Yon-Rogg's voice telling you to be careful following your heart.

As the tendrils of the Supreme Intelligence burned into your skin, you tried to fight it. All you could hear was a voice repeating: "you have failed your test". It only took a few moments before your mind gave out and you collapsed.

You woke abruptly, the pain in your body causing a whimper to be torn unconsciously from your throat. Prying open your eyes, you saw the bare walls of the dungeon cells. You didn't know that so many things could hurt at once.

A coolness spread across your brow and you squinted your eyes as they strained against the bright light in the room.

Someone shushed you as you tried to speak and that was when everything came racing back to you. Your heart started pounding and you pushed the unknown hands away before shooting across the room, your body giving out halfway. You dropped, your bound hands unable to stop you from slamming into the ground.

"Y/N."

You shook your head, trying to get your eyes to focus as you watched the figure crouch down before you.

Yon-Rogg.

His mouth moved and it took you a few minutes to realize he was talking to you.

"-so stupid. Why would you do that? Saving a double agent. I know you don't like bloodshed, but this is war. She could-"

"She was innocent." You whispered.

And he froze, his bright eyes boring into you, "You don't know that."

"I do." You swallowed, "Because she wasn't a double agent. They set me up. The Supreme Intelligence. They knew I saved the last person I was supposed to kill. I helped him. And before you tell me how stupid I was, I'm not sorry. We're on the wrong side of the war, Yon. I couldn't sit around and do nothing anymore."

His eyes flashed and he ran his hands through his hair, "Wrong side of the war? The Skrulls are attacking us. Killing us. How are we on the wrong side? This is everything we've been fighting for, how could you betray us?"

"I betrayed no one but the Supreme Intelligence, who wants to wipe out a whole race for no reason. Tell me there's nothing wrong with that?" Your voice rose louder, "Don't you ever wonder why they don't come after us? Why they always just defend themselves? We've never even been given a reason why!"

"I..." He swallowed, "That's not for us to question."

Your heart sunk, "So, we're just soldiers that blindly follow orders. Where does it end?"

A loud bang sounded outside and you pressed harder against the wall, Yon-Rogg's mouth tightening as he watched you cowering, never having seen you in such a vulnerable state.

"I'm getting you out of here."

"What?" Your voice cracked.

He shook his head and peered over his shoulder as if he was expecting a fight to come through the door, "I'm not leaving you here. They'll kill you."

You shrugged, defeated, "Yeah, I expected nothing less."

"And you're fine with that?" His voice wavered.

"What do you expect me to do? Fight with broken ribs, sprained ankle, hands tied together? I'm not some wonder woman."

Voices echoed outside and as if a switch had been flipped, Yon-Rogg shot forward, the sudden movement startling you. He whipped out a knife and cut through your cuffs quickly. He hauled you up, your arm resting around his shoulders, his other grasping your side, the pain of breathing already getting to you.

"You're signing your own death certificate." You panted, more worried about him than yourself. You had accepted your fate the second you had saved that man two years ago. You knew you would be sentenced to death. But Yon...he hadn't done anything.

"So be it." He growled, his arm wrapping tighter around you, as he all but carried you through the door and started down the hall.

"Be careful with following your heart, it'll get you in trouble." You quoted at him, and you felt his steps falter as a small smile pulled at the corner of his mouth. Your chest warmed a little, knowing he had your back. And as you returned his smile, he paused for a moment, looking down at you. You leaned into his body a little more, his head leaning down toward you, resting his forehead against your temple.

A moment later, he cleared his throat and you took a deep breath before you both started down the hall again.

You didn't make five more feet before guards surrounded the two of you. Their blaster's aimed to kill.

"The Supreme Intelligence wants to speak to you both."

You weren't lucky enough to fall unconscious this time.

The guard's let Yon-Rogg help you down the hall and into the room. You could feel him breathing hard beside you, his eyes darting left and right, trying to find any available escape route to get you out of there. But as you grew closer and closer to the Supreme Intelligence you knew your fate was sealed.

The second you entered the room the two of you were torn apart. It took four guards to hold Yon-Rogg down and you began to fight thinking they were going to attack him for helping you.

But it wasn't him they wanted.

It was you.

One of your closest friends, one of the women you had trained with for years, went on missions with, someone you trusted with your life, stepped up to you, her weapon extended. She threw a fleeting look at Yon-Rogg, who was fighting to break away from the guards, terror filling his eyes as Lora raised her weapon striking you across the face.

You weren't sure how you remained conscious but as she continued to beat you, Yon-Rogg screamed and screamed and fought with all his strength. But no matter what he did, he couldn't help you.

"I'll kill you!" He screamed.

Finally. Finally. Lora stopped hitting you. Your breath was coming in short and everything was becoming numb.

Your last thought was at least they weren't hurting him.

But it wasn't until you finally passed out that they came for him.

The threads burned into your skin as your consciousness fell to the Supreme Intelligence.

"Why?" Your voice croaked hoarsely, your gaze focused solely on the ground, knowing exactly who you would see if you looked up.

"Because you disobeyed."

"No, why did you make him watch?"

"Because he loves you."

Your body jerked, your head shooting up seeing Yon-Rogg staring down at you. His face blank.

It wasn't him.

The Supreme Intelligence's head cocked, "I have known for years. Since you joined us. He tried to fight it. I never thought it would be a problem. I'm not certain when his mission stopped being ours and starting being protecting you, but it has caused me enough issues."

"You're lying." Your heart was pounding.

"It is you who he sees when he speaks to me. Make of that what you will."

"So, you're going to kill us both?"

The Supreme Intelligence paused, "No. I am going to tell him you're dead. Break him down. And then build him back up into the perfect soldier. Emotion's destroy. He will be better without you."

You swallowed heavily, "And what happens to me?"

"You are no threat. However, I can't have you around in fear that you will corrupt my soldier again. But you may be of use to me someday."

The figure before her smiled. But it wasn't Yon's smile.

And then everything went black.

Author's notes: Seriously didn't mean to make this so fucking dark but it happened and now I want to make it happy so possibly a sequel one day