this story starts of back when you were 12. you slept in the basement, and Today was your 12th birthday, you were celebrating your birthday in your room until you hear your siblings and parents scream in fear and pain, you go to investigate and.. you see a demon! you run out in to the freezing cold, your lungs filling with the icy air, your vision starts to a blur, but then you run into something, long black hair with a turquoise at the tips, a boy.. a demon slayer!

Muichiro:"..hm..?"