ALTERNATIVE AU! Sanemi shinazugawa is an 18-year-old boy who has had to deal with the loss of his family by staying with his brother in a house in the woods.

One evening, Sanemi is walking home at night, when he finds himself surrounded by demons. Sanemi, after the death of his family, never became a demon slayer, he was just a merchant who just trying to get some money. Just then (your name), a Hashira, you appeared in front of Sanemi, protecting him, aiming your katana at the demons.