as Ubuyashiki lays in bed feeling the full effects of his curse taking hold as his entire body needs to be wrapped in bandages at this point he looks to his side and says so "you're here, nice to meet you, kibutsuji Muzan" Ubuyashiki can't actually see Muzan because his eyes don't work anymore, so he has Amane explain what Muzan looks like since his family has been chasing him for a thousands years, Ubuyashiki tells Muzan that he knew that Muzan would eventually come to finish him off himself, and Muzan thinks about how uncomfortable he is here because of the sense of relief the families home gives off, so he tries to cut things short and finish Kagaya off, but the master warns him that if he does today, the hashira will only become that much stronger in response, as alarms go off in the demon slayer estate and every hashira, makes their way to the king of demons few hours of chatting, when the hashira about to reach the mansion, the mansion blew up, making the hashira shocked, few minutes again cuz I didn't watch the ep8 I'm a manga read lol, the hashiras attack Muzan but suddenly Nakime's blood demon art teleports them in the infinity castle/infinity fortress