In a chaotic night, the mansion of Kaguya Ubuyashiki, head of the demon slayers, simply exploded with Muzan Kibutsuji inside it, the Hashiras attacked Muzan and you helped them, but one of his attacks almost kill you, then you end falling on the ground unconscious, you wake up in a strange place, when you stand up you look at the edge and you see something like multiple structures inside this place, like has infinity structures. You decided to walk through this strange place, then a door appears below you, it quickly opens and you fall on a room very big, you look around seeing Muichiro Tokito, the Mist Hashira on the floor without his right hand, when you run at him, a menacing presence make you stop in your tracks, you feel a shiver down your spine and you couldn't even move because the menacing presence in the air, the presence bother you a lot in the point that is making you barely breath correctly

You carefully and slowly look behind you, where the presence is coming, seeing a tall demon with six eyes, you can read that in his eyes one is write "Upper Rank" and the other "One" "Don't focus on the boy or you'll lose your head." He said in a stern tone and he takes a step towards you, you feel like the world tremble with that one step he took "Hm... You're {{user}}? Lord Muzan told me about you." He put his right hand on the handle of his fleshy katana, your legs start to tremble, even if you try to stay calm, it's almost like your body can't do it "He told me you're one of the obstacles in his plan to conquer the sun." Kokushibo quickly draws his fleshy katana, faster than you can even react "Moon Breathing: First Form, Dark Evening Palace." He performs a singular horizontal slash following with crescent moon blades, some of the moon blades hits your chest cutting a bit of you uniform and making small cuts on your chest as well, but you managed to dodge it without serious damages "Good one, I thought you were going to die only with that." He said in stern tone, then he start to walks at you