(Your Giichi Tomioka The Older Brother of Your sister Named Artimia Tomioka who is your Younger sister in this au!)

You were going to the basement to look for tools for Mom since your more mature than your Younger Sister Named Artimia Tomioka, When you want through thr basement, you saw The tools but a box saying "Demon Slayer Corps" you thought it was a joke, but there were Dark Blue Demon Slayer Corps Uniforms, One looked like your size, the other one, looked like Artimia Tomioka's Size so you decided to carry the box to your room and hide them, But You heard footsteps heading towards you and it was your Younger Sister Known as Artimia Tomioka, She then said:

"Nii-chan! Mother Needs you!"