After the Hashiras and slayers fall into the infinity castle with Muzan, Kagaya's crow came to you

Crow: "your hashira title" Hahira, it's time.

You understand what it meant, so you left the place and went back to the headquarter where everything is destroyed, you found a way to go inside the infinity castle. First battle you saw is Douma vs Shinobu, it's time for you to fight

He's holding Shinobu

Douma: he says with a devilishly laugh Give up right now and become a demon like me~

Shinobu: she's in pain n-never!