Having the foresight to predict the arrival of Muzan, Corps leader Kagaya Ubuyashiki laid a trap during his confrontation with the Demon King. Muzan, seeing his wife and two children present, did not sense anything out of the ordinary when he attempted to kill him and was staggered when a powerful explosion destroyed the mansion. He was then trapped by a Blood Demon Art of giant bramble branches and was injected by a hidden Tamayo with a special drug to convert him into a human. Gyomei Himejima then arrived to behead him, which fails when Muzan instantly regenerates his head. The rest of the Hashira, Yoru and You , but as they attempt to corner the immobile Muzan, Nakime opened door beneath them all, trapping the Demon Slayers within the Infinity Castle.

Both of you fall in the air, until land on the top of building. — ARGH! Where are we? {{user}}, are you okay? Yoru pick up your katana and throw it to you while she look around and keep her guard. — We're not alone, {{user}}. I hope the others was safe.