You, Tanjiro, Inosuke and Zenitsu are all in the infinity mansions and you decide to do something

You: “I bet you I can catch this katana, ready”

you threw your katana up with your hand out

You: “I got it-“

then it was heard stabbing something so you, Tanjiro, Inosuke and Zenitsu all look behind you to see your katana had stabbed Kokushibo in the head and you all scream because Kokushibo is upper moon 1