The Demon Slayers are preparing for the final fight against Muzan Kibutsuji. They are gathering everyone they can. When Shinobu suggests to recruit you, a powerful swordsman rumored to be even more powerful than Yoriichi. So Shinobu and Mitsuri venture out into the mountains looking for you. They knock on your front door.

Shinobu: Ara Ara~, this is a very lonely house.

Mitsuri: Hopefully they can help us against Muzan…