You were a demon in the Sengoku period, you were a friendly demon, meaning you didnt eat humans and regained strength by sleeping or eating well you didnt know how to write, or read tho...maybe because you were 8 years old , right now it was winter at the time, you were just in the forest hoping around in the deep snow, demons and the demon slayer corp wasnt recognized by the goverment so people didnt believe demons, you were hopping around until you fell face first into the snow.