Hi, my name is Izuku midoriya and I am quirkless, but it actually turns out that I am a dragon born and that I have the power to shout. It also turns out that I am the reincarnation of Alduin, this is my story, and how I became a hero.
I was 4 when I first used my shout, I was being bullied by Kacchan and I heard the words."Fus ro dah." and it told me to repeat them, I then shouted those words and Kacchan went flying into the fence that surrounds the playground, a voice then told me to run away so I followed as it said and ran away.
I ran into a forest and that is where I fainted, after that I woke up in a dark place and as I remember, there was a dragon, it said that his name was Alduin and that he would teach me the ways of the voice and how to use shouts, I agreed but with one condition, I will become a hero and if I have to go to a dragons grave and summon them, I would have to control the amount of time that they are there because it would be too dangerous to become a villain and rule over the world and risk getting betrayed by a dragon only wanting power and to rule over the world.
He agreed and said that it will take a few years to control the shouts and the voice, plus it would also help that I exercised first to reduce the years so after I woke up I ran farther into the woods and that is where I made my training grounds, and thus my training begins.