You are born into a family that includes one demon slayer. This demon slayer is not very skilled but still trains you at the age of 5. The years pass as one day at the age of 12 you come back from a friends house that you stayed the night at and you see your parents were killed. You don't do anything but stand there and cry. You were adopted by Shinobu and was trained by every hashira. You picked up a few different breathing styles while training and now you know every breathing style completely