Italics = thoughts (things not spoken out loud)

Jason climbed up the mountain, reaching a ledge with an entrance to a cave. The elders of the townspeople had spoken of a legend of three high school students years ago who vanished without a trace. At the same time, screeching of legendaries could be heard and the forest had damage all those years ago. Jason was going in the cave to find out if he could add one of those powerful Pokemon to his team.
"Huh?" Some feeling seemed to be pulling him in the cave, not literally, but mentally. He looked down at the skeletons lying around. That's not a good sign. But… maybe I'll have a small peek inside. Jason trembled as he walked into the cave.
FLICK! Jason's flashlight clicked on, darting around the cave. The beam of light reflected off of something. Jason walked over to it. In front of him, lay an altar. A skeleton was lying on it, so Jason pushed it away. It looked like an old stone block. On the edges of the top of it was clean, shiny iron. There were some sort of hieroglyphics scratched into the sides. A skull? Two people holding it? Jason sat there, thinking for a while. I get it! Don't take it out of the area, or you will die. I think that's what it's saying anyway. Jason was about to walk away until he realized something. The altar had dried blood on it, and amidst all the red liquid, deep in the rock, was a dagger. Jason was going to pull it out, but his common sense told him to leave it alone. So, he walked deeper. What he didn't see was the hilt of the knife blinked with red eyes.
Jason turned left, and saw an end to the cave. No Pokemon here. This was a waste of time! Jason then noticed a dark purple feather stuck in the top of a tombstone. His light fell on the rock. He knelt before the stone, and read a single word on the top of it. "R.I.P. Dennis." Who's Dennis? There was a large bird nest next to it. He stepped on what felt like glass. What the… On the ground were pieces of some sort of egg.
This legendary must've been a bird. Well, whatever it was, it's not here. Let's go back to civilization. He walked out of the cave when something made him freeze.
"Hey you. Come over here." Jason swiveled around, looking for the voice. No one there? Must be hearing things. "No, I'm real. I'm on the altar. Here, Jason."
The surprise that the dagger on the rock was enough for Jason to forget the fact that it knew his name. "Pick me up."
"Hold up, how are you talking?"
The dagger blinked. "Please, I assume you need some explanation. I'm the good side of a Pokemon, but I was captured in this blade. Let me tell you the story of Dennis, Kathy, Janice, and Daniel." The dagger told the legend, but in her own twisted way to avoid revealing that she in fact was the problem in the first place."
Jason broke the silence. "Wow, Daniel seems pretty evil for trapping you in that knife. So what does that have to do with me picking you up? You have red eyes, you know."
"Well, you have to free me and help avenge me." The dagger's eyes blinked.
"How am I supposed to help? If they're Lugias, they're more powerful than any Pokemon I have."
"Well, that's where I come in. I'll turn you into a stronger Pokemon!"
"A ghost?"
"No, a different type. These Lugias have some sort of resistance to Ghost types."
"What Pokemon?"
"Well, that'll be a surprise to both of us. Just pick me up!"
"Okay…" Jason felt uncertain as he grabbed the dagger. "I can't pull you out!" Jason tried and tried to pull, but the metal was stuck fast.
"Yerrrg!" Jason pulled the blade from the stone, the sudden stop in pressure sent him careening backwards into the cave wall. Ouch! The dagger swirled with dark energy.
"Now, Jason, stab your left eye with the blade."
"Why the hell would I do that?"
"It's the only way it will work! Now do it!" Jason hesitated, then plunged the knife in his eye. There was no pain, only a feeling of change. What the… White fur was sprouting all throughout his body as he fell forward. His bone structure changed to fit a four legged walker.
"What's going on? What have you done?" Jason felt his head change and he put his hand up to his forehead. It couldn't be called a hand, however, more of a paw. He yelled out in anger and frustration as everything went black.

Jason's eyes blinked open. Where am I? He was a human again, but he was in a white room, with no walls or ceilings. There was only a computer with multiple monitors in front of him, with an empty seat in front. Jason walked over to the computer, and shook the mouse. Memories started playing on the numerous screens. This must be my mind!
A voice cut through the silence. A girl's voice? Here? "Jason, step away from the computer. I don't want to hurt you. Yet." Jason got up and spun on his heels. Standing behind him was an attractive girl around his age, but her head was pointed downwards, her hands emitting purple fireballs.
"What the… Jason slowly walked to his left, away from his mind's computer. The girl looked up, her eyes bright red. The last thing he saw was purple.

Jason's eyes blinked open. "I apologize. I just need you to stay away while I do this." Jason realized he was chained to some sort of wall.
"Okay, who the hell are you and how did you get in my head?"
The girl smiled. "Well, Jason, I'm the spirit from the knife. Impressed? I lied to you! I'm actually the evil side of Kathy! Do you know how long I've been stuck in this cave? Now you'll be the one stuck!" Jason panicked, and tried to break free, but it was to no avail. "Now, now, don't struggle; behave, and I'll give you a surprise!" She walked over to the computer and started typing into it. "Technically, there isn't a computer in your mind; I'm just probing through your brain." She pulled the telltale knife from her pocket and stabbed the PC. Jason was half frightened, but half interested in what she was doing.
"What are you going to do to me? You kind of forgot to mention that."
"Oh right. Here, take this." She grabbed the knife from the now-broken computer and gave it to Jason. "Since you're behaving so well, I'll give you a choice. You can stay in your mind, imprisoned forever, but you can talk to me still; your other choice is to stab yourself and be trapped in the knife in the cave."
"Uh, I'll stay here. I won't be able to see or hear anything?" Kathy stepped away from the computer and faced Jason. She pondered this question.
"Well, if I choose to, maybe I'll let you, my dear." She spread out her arms, shooting black clouds from her palms. Jason gasped as the white room slowly turned black. "Now, it's time to get my revenge! Thank you Jason! Thank you for freeing me!" She vanished, and Jason grunted.
"What have I done? I guess I'll stay so if a good opportunity comes for my benefit. What should I do in the meantime?"

Kathy awoke. Oh yes. I'm free! I must rendezvous with Dennis' and my baby. Where is he? He flew off way before I escaped. She looked at her new body. Her new blade was sharp and strong. "Now there's another threat to you, you happy-go-lucky couple! Watch out Kathy and Daniel! Your dark past will catch up with you!" The dark Absol stretched, revealing a white furry body and dark blue claws and blade. Her eyes were dark purple. She jumped down the mountain and into the forest, and started her search for revenge.

Far from the cave, somewhere on Earth
Kathy's eyes blinked bright red. A feeling of emptiness needing fulfillment washed over her.
"Kat, are you okay?" Janice rubbed her friend's wing, giving her a look of concern. Daniel glanced over.
"Oh…I'm fine." Her eyes returned to a pink-magenta color. "I just feel like something's wrong. Except this feeling isn't new. It's stronger now. Don't worry about it."
Daniel flew over. "Okay, whatever you say." Janice looked at the two Pokemon. There was something they weren't telling her. She didn't want to press the issue, so she fell silent.

Somewhere on Earth
The Shadow Lugia flew over the different regions of Pokemon. I have to find my mother. Why is my father dead? I need some clarity over my life's existence.