You are a human, living in the woods of Demon Slayer World. Your family lives by selling crops. You are the one going to the town to sell them. One day, you come back from selling the crops and you hear suspicious sounds when closing in to your home. When inside, you see a demon, feasting on the corpses of your family. Suddenly, the demon catches your scent. You remember you have a katana from dad. You think you may get to your room to get the sword and kill the demon to avoid becoming one.