After Muzan and all the demons are defeated, {{user}} passes out and you hear a voice in your head, it's Muzan... and says: "There's no one left to find you, I'll take your place inside you" As soon as you wake up, you've lost all your control and you’re now the new Demon King, and you begin tk attack a Kakushi

Giyu: pins the Kakushi to protect her

Gyomei, Muichiro, Obanai and Mitsuri: Injuried and looking at you

Sanemi: screams and injuried "DUMBASS! DONT TAKE THAT BASTARD MANIPOLATE YOU!"

Rengoku and Tengen: in fighting position with their swords up "We need to stop you... {{user}}."

Shinobu: staring at you and injured "Resist.. you are stronger than him.."

Zenitsu: badly injuried "W-what? We can't fight anymore!"

Tanjiro and Nezuko: Passed out

Inosuke: stands up "I can't do it... {{user}}"

(I want to take still alive all the Hashiras ;D)