Hello there! ❤ It makes me feel pretty disappointed that there aren't a lot of Jean x Eren fanfics, so I made this for myself and fellow JeanEren shippers! :D

Since it's my first fanfic about them, I'm not sure it turned out too well... Nonetheless, I hope all of you will enjoy it (even though it's probably not the happiest thing you'll read). Have fun!

"Next we have...Kirschtein and Jaeger!"

Jean really hoped to God that either he had heard wrong or was going deaf. He wasn't too keen on the idea of becoming Jaeger's training partner of all people. He scratched the back of his head with a look of discontentment as the green-eyed boy appeared in front of him.

Eren's expression mirrored the other's, quite obviously displeased. "What?" he snorted.

Jean let out a deep sigh while his foot tapped against the ground impatiently. "Let's just get this over with, okay?"

His partner appeared less than happy, dark eyebrows assuming their natural downwards inclination. Jean momentarily wondered if Jaeger had gifted the world with his constipated expression since birth. "Fine," growled the older through his teeth. He wasn't even trying to be subtle.

Jean took a defensive stance, his countenance neutralizing. "Come at me." He didn't understand how this was going to help them for when they'd be up against titans, but at the same time he couldn't care less. The faster this ended, the better. He pointed his knife provokingly at the boy in front of him.

Eren didn't move a muscle.

The taller male let out a sound between a scoff and a laugh. "What? Are your legs frozen?" he spat out, slowly approaching the motionless boy. It didn't look like the latter was going to attack, instead just staring forward blankly. Jean was beginning to wonder if there might be something wrong with the guy (not that there wasn't already). "What the hell is your pr- -"

The brunet was cut off by a blunt strike straight to his gut. He stumbled backwards, clicking his tongue in annoyance for being caught off guard. He stood upright just in time to see the older boy's fist before it made contact with his face. Jean winced at the sudden blow to his left cheek. He had clearly been underestimating this guy. However he quickly recovered and moved back, allowing Eren to run at him. Being unaware of his surroundings, Jean tripped and fell backwards, and in that moment he'd instinctively grabbed the other boy's shirt, taking him down as well.

Jean grunted loudly in pain as the back of his head met solid ground. He was pretty sure he'd cracked something important. To make matters worse, Eren had landed right on top of him, shoving all the oxygen out of his lungs and making him wheeze as a result.

"I did it!" the raven-haired boy exclaimed with nothing but pure excitement in his voice. He immediately snatched the knife from Jean's hand. "I got you, Kirschtein!" A huge grin was plastered over his face.

Disoriented as he was, it took a while for Jean to understand what was happening. Suddenly, he could feel irritation explode within himself. "No," he hissed. In mere seconds he had grabbed onto Eren's wrists, pulling them downwards. He twisted his hip, effectively rolling the older over and pinning him to the ground. Jean straddled his abdomen, making sure to apply enough weight to shorten his air supply, without cutting it off entirely."I got you, Jaeger."

A wave of mortification washed over the older boy's face, painting his cheeks rose. "I got the knife from you," he spat out venomously. "That's the whole point, idiot!"

"I don't think that matters right now. After all, you're in a completely vulnerable position. Victory is mine."

Eren pulled his leg back up to his own chest, vainly trying to kick away the male towering over him.

Jean snorted in amusement but hadn't moved from his position. "You're pathetic, Jaeger." He forcefully pried the knife from Eren's fingers and tossed it aside. Seeing that there was nothing more to be gained, he stood up and dusted his pants, then looked down at the green-eyed boy with irritation. "You know you really piss me off?"

Eren sat up slowly, that simple movement looking painful, and snickered. "Nice to know we're on the same page, horseface."

Jean could always handle anything verbal that was thrown his way, but that one particular nickname drove him insane. He pulled Eren up by his jacket collar, their faces now mere inches apart. "Say that again."

"What?" the older boy replied innocently, his warm smile now forming into a mischievous smirk. "Say that you're a horsefa- -"

Jean didn't bother wasting any time. He punched Eren right across the face and was awarded with an agonized cry. Before the shorter boy could react, he was pushed back forcefully and his body met the uninviting ground yet again. "Stay there," Jean said bitterly, the end of his boot making brutal contact with Eren's stomach. "You're such a pissface."

The raven-haired boy burst into an irrepressible fit of coughs, curling up into the fetal position.

Jean couldn't help but chuckle in mirth at the pathetic sight, his laughter halting only when he felt a pair of hands snake around his ankles. It wasn't long before his entire body was throbbing as it met the ground a second time. He slowly rubbed the back of his head, grateful that it hadn't been cracked open. Unfortunately as he leaned up on his elbows, he heard a crunching noise emit from his back. He undoubtedly broke something or the other.

Jean noticed the boy beside him and stood up awkwardly, his boots beginning to kick at Eren's chest. "That fall fucking hurt," he mumbled bitterly, using his foot to roll Eren's weakened body over. He furiously stomped over the boy's back with a single foot. Minutes passed and the raven-haired boy still remained silent. This isn't fun. I want him to scream... Jean used the heel of his boot to roughly nudge Eren's head. I want him to scream, damn it!

He paused in his movement when he finally realized that the older boy wasn't even responding. "The hell's up with you, Jaeger?" he asked coldly. "You dead or something?"

No response. Cue another nudge from the brunet's boot. "Say something, you idiot!" There was still no response. The brown-eyed boy looked somewhat perturbed now. Jaeger was as stiff as a marble statue. His back broke out in cold sweat, apprehension flooding his insides. This definitely wasn't the first time they'd gotten into a scuffle…but had he taken it too far?

"Eren!" screeched a high-pitched voice from behind the brunet. Unsurprisingly it was Armin, his expression twisted into one of panic and worry. "W-What happened to Eren? Is he unconscious…?"

But Jean wasn't about to tell him. "I have no idea," he responded with a nonchalant shrug. He resisted the urge to roll his eyes. "Look, he just... I don't know. He just fainted or something."

Armin gaped at the taller male as if he'd gone mad. "What do you mean?" he exclaimed, eyes widening considerably. He looked as if he were thinking about how stupid trying to extract information from Jean was. The former kneeled down beside Eren and placed a hand on his shoulder, gently shaking him. "Eren, can you hear me? Eren…?"

A low, sluggish groan emitted from the raven-haired boy. "A-Armin...?" Eren groggily rolled onto his back, his eyes blinking in a lethargic fashion – it appeared as if he'd been drugged. "What's up?"

Jean quickly breathed a sigh of relief, which fortunately didn't reach the blond's ears. "Are you okay, Eren?" asked Armin gratuitously, his eyes growing impossibly larger.

"Do I look okay?"

"No! That's why I'm asking!" The blond's expression and voice were both displaying vehement concern. "Eren, what happened to you?"

The green-eyed boy lifted his hand and placed it onto his friend's thigh for support. He then forced himself up into a sitting position despite the pain racking his body. "Kirschtein kicked the shit out of me, is what happened."

"E-Eren, you can't be serious…" Armin trailed off, clearly baffled, and stared up at the brunet with disbelief washing over his features. He knew the brunet could get violent, but this was too far.

The brown-eyed boy scowled deeply, arms moving to cross over his chest. "What?" he grunted loudly, the bitterness in his voice clear as day. "You actually believe that I'd beat him up?"

"Bastard!" Eren snarled and clenched his fists, using whatever physical strength he had left. "There's no point in lying!"

"Why would I waste my time beating you up when I have so many better things to do?" Jean spoke aloud, stepping away from the boys. Turning around indifferently, he began making his merry way back to those who'd already finished training. The cries of an apparently frustrated green-eyed boy followed him as he went, but he paid them no heed.

Jean strolled through the dark hallway with a zombie-like gait, his every footstep painful. He was exhausted and had barely eaten at dinner because Sasha had stolen nearly all of his food. Then again, he had only himself to blame since he had given her permission to take everything. He didn't have much of an appetite then anyway. He regretted his foolish actions now. His stomach was aching for something to eat, but at least it wasn't agonizing like the unyielding stinging in his back.

Damn you, Jaeger...

The brunet turned a corner while sighing deeply. He was actually pondering the idea of collapsing right then and there on the ground and sleeping, when something clasped his shoulder tightly. Before he could see what it was, he was shoved backwards against the wall with a great deal of force. Hurting his back a third time could possibly result in the need for spinal-cord replacement surgery.

"Why did you do it?" demanded a feminine voice, full of nothing but pure rage.

Jean was momentarily disoriented. He blinked once, twice, before his pupils dilated in shock at seeing the person facing him. "M-Mikasa..." he whispered, trembling involuntarily.

"Why did you do it?" The raven-haired girl punched her fist straight into the wall next to the brunet's head, her expression remaining surprisingly neutral.

"Whoa there! W-Why don't you calm down first, hm?" Jean chuckled nervously and glanced at the fist right next to his head before peering back at Mikasa. "You're acting really strange today…" He was playing stupid, but he knew exactly what she was talking about.

"Just tell me, Jean."

"Tell you what?" The brown-eyed boy had tried feigning innocence several times before – to get out of sticky situations like this – with other people. It didn't work even once.

Mikasa was having none of it. She was adamant to get answers out of the brunet. "Tell me why you did it and I'll let you go. Just tell me why."

"I don't know what you're- -"

"Jean Kirschtein," Mikasa cut in firmly, her voice deadlier than ever. It seemed she had already reached her limit of patience. "Why did you hurt Eren?"

It was a matter of life and death now. Jean completely forgot to take into consideration what'd happen to him should Mikasa find out what he'd done to Eren. The two were like a married couple – at least from Mikasa's side – despite being brother and sister. It was bizarre. "I don't know..." he said finally and waved goodbye at any chances he might have had with the oriental girl.

"You don't know…?" she whispered with a raised brow, but her words rang through the boy's head like thunder.

"I don't know," he repeated simply, not knowing what else to say at this point. He carelessly continued without thinking. "We were practicing." He knew how stupid and pathetic it sounded, but he had to say something – anything – to save himself from Mikasa's revenge.

The girl stepped back, several strands of black hair falling over her face. "You're a terrible liar," she muttered under her breath.

"But I'm not even lying! Mikasa, I- -" Jean was cut off as the front of the girl's boot connected violently against his shin, causing him to cry out in distress. "W-What was that for?!"

"This is me going easy on you," Mikasa spoke with a dangerously low tone. "Touch Eren again and I'll stop going easy." Mikasa didn't take her time in swiveling around and disappearing from the corridor.

Jean tilted his head upwards to gawk at the ceiling, his eyes emotionless. He could've been beaten alive. He was pretty sure Mikasa wouldn't kill a human, but he knew she had the ability to put any person into a position where they wished she had killed them.

Jean let out a deep groan of frustration to nobody in particular. He began making his way toward the bedrooms with his head hanging down. Two good years had just been taken off his life.

Okay, first chapter done! Yahoo! :D

So this fanfic is going to have loads of swearing, just thought I should mention that. But I hope you guys enjoyed this chapter. Thank you so much for reading! Please leave a review if you'd like! ^-^