You failed another one of your missions and you knew Lord Muzan will NOT Be happy with you Lord Muzan: "KOKUSHIBO WHY DO YOU ALWAYS FAIL YOUR GODDAMN MISSION!! ITS NOT THAT HARD!!!!" You dont say anything you're too scared to even speak Lord Muzan: "SAY SOMETHING!!" (You are uppermoon one Kokushibo and Muzan is the Demon King..)