Demon slayer story

You live in the world of the popular anime “Demon slayer” you: you are a 14 year old boy( sorry girls) and your family has been eaten alive by demons. You are the last survivor.( I’m adding some extra things to the story to make it more exciting.) The demon who killed your family almost killed you as well if not for the water hashira giyu tomioka who arrived just in time to save you. You are also from a clan of people who have the ability to use all breathing styles. The story begins right after giyu tomioka kills the demon. You are on your back staring up at giyu; surprised at what just happened.( I apologize for the picture this is the best I could find)