Chronicle of the dragon slayer [revamped version]

"AHHHHHHHHHHHHH"
"WHYYYYYYYY"
"NOOOOOOOO"
"IT HUUUUUURT AHHHH"
I could hear the screams of the people inside the castle, each screaming as they were burned alive, I heard the voices of friends, daily, loved ones, and everyone else that I held dear. But I still had to run, to stop would mean to lose any hope of revenge.
"Huhuhuhhuhuh" I woke up as the nightmare ended, and clenched my chest to calm my breath.
"This nightmare again." that's right this wasn't the first time I had seen this nightmare, it had come to me every night since I had run away from the hell that the dragons bought about on the capital.
It had been 40 years since that day and each of the 14610 days I had spent in the mountains I had spent training. Training so that I would be able to get my revenge, training so that I won't have to experience that hell again, and training so that I could lop off the heads of those damned monsters.
I had no meaning left in life,becoming strong enough to get my own revenge against those abhorrent creatures, became my sole purpose in life, and one day my wishes came true.