A/N: I kinda feel this story is a bit different than my other stories; it might seem the same at first, but trust me, in the later chapters it's gonna be a bit different.

It happens during season 10, not because of its storyline, just because of the interaction that we've so far seen between Dean and Sam. This could be just an excuse to hurt Dean and have some brotherly love!

So, I think there's no need to give any spoiler alert.

Warning for language!

And I just hope you like this story and let me know what you think.

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. The Importance of Being Dean Winchester .

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"Holy Shit." Sam exclaimed as the right side of his head collided with the side window, causing him to startle awake when, all of a sudden, Dean turned the steering wheel sharply and pulled over at the side of the road. "What the hell, man?" He groaned as he squeezed his right shoulder with his left hand and rubbed the side of his head with his right fingers.

When he didn't get an answer, not even a smratass remark, let alone an apology or an excuse, he looked to his left and found Dean clutching the steering wheel tightly, his knuckles white and he was staring at something ahead with wide, and terrified?!, eyes.

That was enough to alarm Sam that something was wrong and instinctively he grabbed his knife and bent slightly forward to look outside the windshield; he looked around with careful eyes, checking everything, but nothing caught his attention; nothing seemed out of order; so he turned his gaze back to Dean and studied his still shell-shocked brother.

"Dean?" he called tentatively. "Whu-" He put a hand on the older man's shoulder which caused him to jump in his seat and turn wild eyes to his brother. But those green eyes didn't stop on Sam, they were darting around rapidly, not fixing on anything in particular and really; Sam was getting scared.

"Dean, for crying out loud, talk to me."

"Sam?"

Wow, Dean sounded unsure and... And scared? Just what the hell?

Sam was about to say 'Duh', but changed his mind when he saw his brother had yet to let go of the wheel and his knuckles were even whiter. "Who else? We were together in the car. Dean, what the hell is going on?"

"Some-" Dean had to pause to swallow and wet his suddenly dry throat. "Somebody just turned the light off."

"What?" Sam frowned and looked around. "No they didn't."

"Yes, they did."

Sam's eyes slowly went back to his brother's face and for the first time he noticed how unfocused Dean's eyes were.

'Holy shit!' Sam's hand went up and he waved it in front of Dean's face for good measure, but when he got no reaction, he felt his heart sank to the bottom of his boots.

"Sam?" Dean's voice shook him out of his stupor.

"I... I'm here."

"Sam, it's not dark, is it?" Dean knew the answer before asking the question. There was no way everything would suddenly turn black in the middle of the day; nevertheless, he still hoped that there'd be something making the impossible happen, rather than something scarier; like, say, his eyes suddenly not seeing a thing for no reason.

"No... No, Dean. It's not." Sam's voice was quiet and he sounded just as shocked and scared as Dean did; but he quickly snapped out of it; or maybe it was the fear leading him, because he suddenly started to move. "OK. OK. Look, let's get you to the nearest hospital. Come on. Move over; I'll come around and drive." With that he jumped outside and ran to the other side of the car and was glad to see that Dean had finally let go of the wheel and had scooted over, looking a bit more collected.

"We'll figure it out." He found himself saying the moment he sat in the car, looking at the pale face of his brother.

Dean merely nodded and closed his eyes, leaning his head against the side window.

The nearest hospital didn't appear for the next two hours, but when they finally got there and Sam woke Dean up and led him inside, they didn't have to wait long before an elderly doctor came to help them.

"So, no headache? No nothing?" The old doctor asked again as he put his penlight aside and looked with confusion at Dean on the exam table.

"No nothing." Dean answered hoarsely. "I was driving my car and everything was alright and then BAM; the lights were out."

The doctor shook his head. "I can't see anything wrong with your eyes right now, so we'll have to do more tests. The reason behind your sudden blindness might be a blood clot or a minor stroke."

Both Dean and Sam turned whiter shade of pale at hearing that, but neither could find anything to say about it; so they both kept quiet.

At least until they were alone again.

"I'm sure it's nothing, Dean." Sam tried to sound more certain than he really felt.

Dean was tempted to snap at his brother and tell him that he was blind. Blind. It was not nothing; it was already something and if a stupid blood clot or, God forbid, a minor stroke or something just as ominous had happened to cause it, there was probably nothing the doctors could do to help him; to give him his sight back. And if he couldn't see... He shuddered at that thought and just buried his face in his hands; letting, at least, Sam be a little optimistic about the whole thing.

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Three hours later, Dean and Sam were back to waiting, this time for the test results and in a room as Dean had been admitted; and when the doctor walked in with reports and scan results in his hand, neither one could properly hide their anxiety.

They hadn't exchanged a word for at least an hour and both were contemplating the situation and were trying to deal with it, their own way; Sam was pacing the room up and down; swaying between looking out the window and going back to study Dean while the older brother merely lay on his bed, with his eyes closed; trying to put a brave face on.

"I have your results back."

Sam studied the doctor's face to see if he should prepare himself for the bad news and Dean did the same by listening to the man's voice, since he was deprived of the privilege of watching his movements.

"Well-"

"Just spit it out, Doctor. Will you?" Dean said in a hard tone.

"OK. Well, here's the thing, I think we should redo the tests."

"What?" Both brothers uttered in unison.

"The... Look, I'm sorry, but the thing is the tests and scans show nothing wrong; absolutely nothing. In fact, you're perfectly healthy if these are correct." He shook the papers in his hands.

"Then why in the hell can I not see a damn thing?" Dean growled. Man, he didn't think there could be something worse than not knowing whether it was a blood clot or a stroke that had caused his problem. He's silently hoped it was a blood clot, because that was operable and there was a chance he could see again; with a stroke, everything was probably over; well, chances were slimmer, anyway.

But now... Now this good for nothing doctor was telling him that nothing seemed wrong and it was worse, because now he didn't know what had caused all this and the not knowing was killing him.

"Exactly." The doctor said. "That's why I think we should redo the tests." He then realized how weary both brothers looked, so he continued, "I'll go and discuss the situation with a few of my colleagues first, though. In the meantime, you get some rest; whatever it is, stress is not something you need on top of it right now, it could worsen your situation."

Neither brother said anything as the doctor walked out; neither even could think of anything to say; so Sam collapsed into the chair near the wall and heaved a sigh as Dean's mind drifted away and soon after that, he started to zone out.

Sam wasn't sure how many hours he'd slept, but when he opened his eyes, it was dark outside and his body was screaming at him for sleeping on a hard chair.

Dean was still not awake and he looked kinda peaceful in his sleep, so Sam kept quiet and let him rest; knowing that at least in his sleep, the older man didn't need to worry about his eyesight.

Damn, he could understand why Dean was scared shitless, and Dean was scared shitless, because he'd shut Sam out, had been stoic and hadn't made a single joke the whole time. Heck, Sam was scared just as much and he wasn't the one facing an uncertain future.

Silently he walked out of the room to use the bathroom in the hall.

When he came back and entered the room quietly, he didn't expect to see Dean's shocked face right in front of him, so he jumped a little. Dean wasn't on the bed; he was standing in the middle of the room and... And he was staring right at him.

"Dean?" He wasn't sure if Dean was actually awake.

"I can see." It was the first thing Dean blurted out.

"You can... What?" Sam knew he was sounding ridiculous, but he was dumbfounded.

"Sam..." Dean shook his head, showing that he was just as bewildered.

"I'll go get your doctor." Sam said quietly but didn't move from his spot.

"No." Dean announced. "Let's get outta here."

"What? No, Dean. You could be dying." Sam stepped further inside, trying to stop Dean from doing something stupid.

"Weren't you there when the doctor said I'm perfectly healthy?"

"And you still couldn't see a thing when he said that. In case you've forgotten." Sam insisted stubbornly.

"Sam, can't you see? There's nothing wrong with me."

"Then how can you explain hours of blindness without even as much as a headache. Maybe you've been too tired, or have been stressed out; maybe-"

"Any of those things should've left a trace on the scans." Dean interrupted his brother. "But the doctor said there was nothing. I'm fine."

"Then explain it to me. What's happening?"

"I can't. Which is why we should get out of here."

Sam shook his head, showing that he wasn't following Dean's logic.

Rolling his eyes, Dean said, "What does it mean when things happen that people can't understand? When there's no natural way to explain it?"

"Oh."

"Yeah, Oh." Dean nodded. "Let's go, Sammy. Whatever son of a bitch that's doing this to me? I want it killed and burned yesterday. Nobody messes with Dean Winchester."

"Yeah, we better get to it before it hurts you too bad."

"Blindness is not too bad? Because let me tell you, it's horrifying."

"You can see again, can't you?"

Dean slowly shook his head from side to side, "Point taken." But he still sounded disturbed.

"We'll find it, Dean." Sam said reassuringly, having some ideas how scary it was not to know what'd happen next or what kind of creature had caused the temporary blindness. No, he wouldn't let that happen again; they'd find that thing and get rid of it, pronto.

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... TBC ...

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A/N: Your reviews and comments will help me a lot and would encourage me to work faster. ;)

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All mistakes are mine.

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