Pokémon Mystery Dungeon: Crescent Nightmare

Chapter 1: Shooting Star
Night greeted the desert with cold silence, a light breeze the only hint of the coming sandstorm. A crescent moon loomed from the star-filled sky, casting its light over the sea of sand. All was still in the heavens, with the exception of a single shooting star hurtling earthwards.
All was calm that evening, with the exception of a single young Eevee.
Kicking up sand in his mad rush, the little Pokémon appreciated the desert winds for the first time in his life; usually it just meant an itchy throat and bloodshot eyes, but tonight it saved him the trouble of having to cover his tracks.
Somewhere in the panicked shambles of Ven's mind, he noted that what he was doing was absolutely insane. He was being chased by a pack of murderous bandits and his first course of action was to run towards that shooting star. What was he, some common Murkrow? Obsessed with anything and everything shiny?
His parents had always warned him to keep his head out of the dust-clouds, to stay focused on the situation at hand. But then again, look at where all their wisdom had gotten them in the end.
"Besides, it's not like I have anywhere else to go!" Ven suddenly yelled to no one in particular, his voice muffled by his scarf.
He'd always wanted to see a meteorite in person, ever since his father had told him about them. It seemed like years since the Umbreon had taken him outside the den when the weather was clear, teaching him about the stars and the moon and everything else in the night sky.
Yeah, he'd get the last laugh and do something he wanted to do for once. That would show the world.
Occupied with his thoughts, the Eevee lost his footing and tumbled down a sand dune. Dazed and tired, Ven buried his hands in his paws. But he couldn't stop here. He had nothing left, but for some unfathomable reason he was determined to see this meteorite before he died.
"Hi there."
A Pikachu stood directly in front of him, its face positioned uncomfortably close to his own.
"AHHHHH!" Ven screamed and jumped back. Even through his makeshift muffler, the shriek was loud and high-pitched.
"Ouch!" the Pikachu flinched, clutching its long ears.
"Keep your voice down! My ears are really sensitive," it pouted.
Ven simply stared at the whimpering mouse in disbelief. He recognized the red cheeks and characteristic lightning-bolt tail from books and drawings; this was a real, live Pikachu. But there weren't supposed to be any Pikachu left in the desert. They all died off ages ago…
"…So, what's your name?" the Pikachu quickly recovered. The mouse's voice was cheerful, almost annoying really, and its straight-edged tail was energetically bobbing left and right. Female Pikachu had creased tails, Ven recalled, so this one must've been male.
"C'mon, you just showed me you're not mute, so speak up," the Pikachu smiled, as though to encourage him.
"What…how?" Ven stammered, completely shell-shocked. "Who are you? W-where did you come from?"
"Good questions," the Electric mouse replied, still smiling. "I've got no clue! The only thing I remember is falling and falling and…landing in this desert," he concluded rather lamely.
Now that he had a closer look, Ven noticed the Pikachu's fur was tinged black at edges, like it was burned.
"So that was you I saw falling from the sky?" the Eevee was getting more and more confused by the second, and the Pikachu's irritatingly complacent smile wasn't helping.
"Yup. Landed right over there somewhere," the Pikachu pointed vaguely off into the distance where Ven had seen the shooting star land.
"But, then how did you survive the fall!?"
"Ha ha, I don't know that either."
Ven had half a mind to give the strange mouse a good bite on the tail, but restrained himself. He had better things to do, Ven realized, his irritation at the Pikachu strengthening his resolve. He was going to check out the impact site like he'd planned, find out if the Pikachu was telling the truth, and then he'd keep running. He wasn't going to just roll over and die.
"Hey, you're going somewhere?" the Pikachu whined as Ven got up. "But you haven't told me your name yet."
"The name's Ven," the Eevee said brusquely. "It's been nice meeting you, but I have to get going."
He turned to leave, when a gruff voice suddenly yelled out from atop the sand dune. "There you are, ya little furball!"
Crap, he'd been found!
"Ha, you thought you could get away from us?!" another, higher-pitched voiced added.
"Hey, are those your friends?" the Pikachu pointed at the pair of bandits, a massive Tyranitar and a scrawny Sneasel, both of whom were menacingly glaring at them.
"No you idiot, they're-!" Ven had an idea and stopped himself. If he made a run for it now and left this weirdo behind, the bandits would go for the mouse and… Ven had a sudden mental image of a mangled mess of yellow fur, torn to shreds and covered in blood.
Damn it, weirdo or not, Ven couldn't just leave him.
"-They're bandits you idiot! Run!" the Eevee cried.
"W-what? You mean they're going to hurt us?"
Ven broke into a run, but looked back to see that the Pikachu was still rooted to the spot, trembling in fear. The idiot wasn't even moving!
"Yes! Now move it!"
The Tyranitar gave an earth-shattering roar and charged towards them.
"N-no! Stay away!" the Pikachu cried and curled up into a ball. Fine, if the mouse wasn't following, then he'd have to leave him behind and-
CRACK!
A massive bolt of electricity suddenly burst from the Pikachu's tail and struck the charging beast square in the chest.
"AAAAAGH!" the Tyranitar shrieked in pain as the electricity consumed its rock-plated body, burning it to a crisp. In mere seconds, the giant Pokémon had been reduced to a pile of ash.
Mouth agape with shock, the Sneasel fled.
Ven, mouth open just as widely, stared at the trembling mouse.
"How…How did you do that!?"
"H-huh? What? What just happened?" the Pikachu asked, still curled up.
"You just obliterated that thing!" Ven said in amazement. "How the heck did a little Pikachu like you just destroy a massive Tyranitar like that!?"
"Wait. I…did that?" the Pikachu poked his head out and stared at the pile of ash.
The Electric-type looked completely clueless. Was he not aware of using the attack? Could he not control his own powers or something?
Ven was deep in thought as the ash was blown away by the desert winds. If this little Pikachu could defeat something as powerful as a Tyranitar so easily, and without any awareness or battle training...
"Let's move, Zappy. Sandstorm's brewing, and we have to find a town. Get some shelter." The Eevee gave out a forepaw and helped the mouse up.
A loose plan was already forming in the young Eevee's mind. Just imagine what the mouse could do once it was properly trained, once it could control its electricity. No bandit would stand a chance! He'd just have to stay in Zappy's good books, and getting revenge would be a snap!
"Faster, Zappy!"
"Zack."
"Eh?"
"Zack. Call me Zack. It's a human name and it kinda sounds like 'zap', right?"
"A human-?" Ven started, perplexed.
"Oh yeah, I forgot to tell you. I look like a Pikachu, but I'm actually a human."
…
"What."

Disclaimer: I shouldn't have to say this, but I don't own Pokémon. Game Freak and Nintendo do, obviously.
A/N: Not exactly my first ever fanfic, but the first one I've ever posted online. 
I also picked the perfect time to start posting, huh? School starts in a few days time, which is just awesome...