Natsu's POV

Two weeks have passed and I still haven't found a strong opponent to help me train. Well besides Gildarts. I sit beside Happy by the river as he fishes. "Caught anything yet?" Happy smiles in a dreaming state, drooling about fish. I start to laugh as he mutters, "Fish..." Suddenly a sharp pain strikes my head and I quickly wince. What was- The pain intensifies as I stand up gripping my head. 

An image flashes into my head. That of a small kid with black hair, horns and a smile. "Nii-san?"he questions. The flashback stops so quickly and the pain stops. What or Who was that? "Natsu are you OK?" Happy tucks on my vest."Yea, let's keep going. " I smile patting his head. We make our way to Mt. Hakobe to train. Halfway to the top, we encounter a  blizzardvern. Oh yeah, Now I'm fired up. I burst my fist in flames and leap up. However, in mid-air pain strikes my head and a vision appears.

Past
I was younger and was hiking with a little black haired kid. A blizzardvern appears and charges towards us.  I started fighting back with fist blazing. While his claws were on me, he swings his tail towards me. "Look out Nii-san! "The little kid charges behind me."Wait!" it was too late. The snow cloud settles to reveal crystals that formed on his arms to block the tail. I smile and push the beast back. "Looks like you discovered your curse." I pat him on the head with a grin. "Took you long enough." the kid smiles at me, joy filling his eyes.

Just like that the vision disappears as I punch the blizzardvern in the jaw. A demonic aura was released from my body as I land, causing the blizzardvern to back away. "Who was that kid?" I mutter to myself. "Hey Natsu, Are you ok?" Happy question walking over to me as the aura disappears. I smile, "Yea" lying to his face. My head was buzzing like crazy and then and everything went black as I shut down. My chest starts to have a burning sensation as I find myself in a strange space. The ground was black but it felt like I was walking on water as it ripples the more I walk.  "Where am I?" Space shines and turns into a forest area near Lamia Scales guild. I look around to spot a kid with spiky black hair and horns. I feel as if I know him for some reason. Taking a look at him walk, I spot a spark of black flames trapped inside a crystal from inside the boy's chest. The flames were...calling out to me. "Natsu!" The voice felt familiar like it belongs with me. I start to reach my hand out to it, pushing my arm into a mirror and grab ahold of something warm. The kid  stops and grips his arms, shivering. He falls to his knees screaming. Am I doing this to him?His body starts transforming into a demonic state while in pain. His horn and size grow. The kid  starts to look more like...END. My anger grows for what he did to my friends back then. His body burst into black flames as I pull the crystal through the mirror but suddenly it gets suck back through the mirror, slipping out my hand.  A wave of crystals blasts me back into reality.

"Natsu!Natsu what happened!?"I wake up to see a worried Happy, nudging my shoulder. "Sorry Happy." I slowly sit up. What was that back there?