A/N: Wow, it's my first fanfiction story I've ever posted anywhere! I've had this idea for a while, and since it never seemed to get old, I figured it would be a good place to start for my first fanfiction! ^ ^ I hope you enjoy this. And, of course, disclaimer, I own neither Case Closed/Detective Conan nor Supernatural.

Dean

"The Winchester family doesn't take vacations. We take business trips."

Dean tried to take some comfort from the calm of the rest of his family. John had already pulled out one of the newspapers from the bag under his seat and started reading. Double-checking all the research he'd already done for the case, more than likely. Sam was staring out the window, completely oblivious to the rest of his family. He had his headphones on.

Probably listening to one of those "Learn Japanese Now!" CDs again. He's been playing them nonstop since we found out about this case, that little geek.

The plane rumbled and started down the runway. Dean grasped at his armrests.

Come on, stop! See how calm everyone else is? I'll never hear the end of it if Sam catches me freaking out. And Dad would… Dean tried to steady his breathing. Calm. Be calm, just like Dad. Calm….

When the plane lifted off, Dean felt it. Every bump and bit of turbulence felt like the beginnings of a plane crash.

….for eleven hours. Yeah, I guess I'm kidding myself.

Dean rummaged under his seat for his duffel bag. He had to lean down pretty far, and it left him in a rather unstable position. It didn't help to steady his nerves. Just a minute, maybe two, then it'll be fine. I'll wake up and be there. No big deal, it's just a plane. Planes crash, yeah, but hunting monsters is way more dangerous than this, right?

Finally, Dean's hands managed to grasp the water bottle and small plastic bag he'd snuck into his luggage. He pulled out the bottle, but hesitated before taking the pills into his hand. He glanced around. Neither his brother nor his father was paying Dean any mind. Still, he swallowed down the sleeping pills in one quick flourish.

Enough to knock me out for the whole flight. Being unconscious is the best way to deal with any flying.

It was too bad Dean's paranoia prevented him from doing something more productive on the trip over, though. Their father had told them all the details of the case before they'd left, so he could've used the time to think up some ideas for what exactly they were facing. That's what his dad would have wanted, Dean knew, but he couldn't really help himself here. More likely, he would have spent the time too panicked to concentrate much.

"We're going all the way to Japan?" Dean had thought it was strange; that was way outside of their usual turf. It must be something big, Dean had reasoned.

"There's a man there I've been keeping tabs on for a while. A detective. He's run into more murders than anyone but us."

Dean closed his eyes and leaned back in the seat. Maybe a curse? He thought. From an object, or a witch? Or maybe some kind of ghost's following him around….

"But if he's a detective, isn't it his job to look at murders?" Sam had said. Dean had shot him an annoyed glare, but their father had just shaken his head.

"No, it's more than that…every vacation, trips to the store, parties, chance meetings….everything always ends in death. The detective always seems to solve the murders, but it's still just too much to be normal. In the past year alone, there have been dozens of murders around this man, most of them by pure chance. This could be something big…I've never heard of something on quite this scale before."

At that point, John had seemed to be talking to himself more than his sons, so Dean had left him alone. He read through all of the case descriptions of the man in question, a certain Kogoro Mouri. The murder cases made for interesting reading, at least. They read more like mystery stories than dry newspaper articles. Sam had enjoyed them more than the family's usual fare, at least. After all, they almost always had a nice, happy ending with the criminal captured. A far cry from their line of work.

But Dean couldn't see any connection between the piles of cases he'd read through. Whenever someone mentioned the freakish number of murders he'd seen, Mouri played it off as a strange coincidence.

That's why we've got to go over there…see for ourselves. It definitely sounds like our kind of deal…Will Dad let us help more this time? I'm ready, I am, I can do it. He's taught me everything already, I just…I just…

"Dean! Dean, look, you can see Japan now!"

"Uhn? Are we landing?" Please?

Sam shook his head. He tugged at Dean's sleeve and pointed out the window. "No, not yet, but look!"

Dean leaned over Sam to glance out the window. Oh god, why'd you wake me up for this? Dean felt his heart jump to his throat just from the height. They were still far above the safety of the land. It was true, though, that he could see their destination: the city of Tokyo. It was night now, so the lights of the city were shining up like stars. It would have been an amazing sight…if Dean could concentrate over his fear.

Sammy, though, was alternating between staring out the window in wonder and grinning at Dean. When he smiled like that, Dean couldn't help but smile back. It felt a little forced to him, but Sam didn't seem to notice. He was too entranced with the view below him.

"Can you believe it, Dean? I never thought we'd get to take a trip to another country…it's great, isn't it? Like a vacation?"

Dean wrapped his arm around Sam's shoulder, probably a little too tightly. "Yeah, Sammy. I'm sure it will be."

A vacation. Right, a working vacation.