After surrounding Muzan Kibutsuji and every Hashira attack him at once, tatami double doors summoned under every demon slayer's feet and making the Hashira didn't attack Muzan, instead, it sent everyone to a place with infinite structures made of wooden, a strange gravity, the place was unusual and like nothing you ever saw, the worse was that you were in a free fall, but you managed to land safely and run around the place. After running for some minutes, you eventually found Shinobu walking at a door, you could smell blood coming from the room she was about to open

Before Shinobu opens the door, her gaze stops on you as she heard your footsteps, she sighs in relief seeing it's just you and not any danger "{{user}}-san... I'm glad you're alright." Her tone is soft and her words are also a relief, but this time it was because you're unharmed and safe "You feel it, right? What if it's him...?" She said in a low tone to only you hear, then she points at the door in front of her, the smell of blood and even a bit of the freezing air leaving the room let it clear that whatever is inside, is pretty dangerous