Tập 11: Tanjiro và Zenitsu bước vào Tsuzumi Mansion đang biến đổi để đối đầu với một ác ma đang kiểm soát ngôi nhà.

Tanjiro separates Zenitsu from the harassed girl, who slaps Zenitsu when he tries to push it. Zenitsu states he's weak and will die on his next job, which is why he had to get married. He tells Tanjiro he didn't want to become a Demon Slayer but got into debt with a woman, who gave him to his trainer who made him become one. Tanjiro's crow directs both boys to a mansion. Zenitsu's hearing is as sharp as Tanjiro's smell and he hears two scared kids who tell Tanjiro it is a demon's house and the demon took their older brother inside. A man is thrown outside the house and dies moments later, but it is not the siblings' brother. Tanjiro cajoles a terrified Zenitsu into coming into the house with him, leaving Nezuko (in her box) with the siblings to protect them. Zenitsu overreacts when Tanjiro says he still has broken bones as that means he can't protect him. The siblings enter the demon's house behind them as they heard Nezuko scratching and got scared, leaving her behind. The house suddenly rearranges itself, separating the group, stranding the sister, Teruko, with Tanjiro and the brother, Shoichi, with Zenitsu. Shoichi berates Zenitsu for his cowardice. While Zenitsu frantically looks for an exit he opens a door and sees a boar-headed man, who passes them by. The demon of the house approaches Tanjiro and Teruko hides. Tanjiro leaps at the demon, who rants a child with rare blood he found, his prey, has been taken, before flipping the room so they are standing on the wall. His blood art gives him total control of the house when he strikes a tsuzumi drum growing from his body. The boar-headed man unexpectedly leaps into the room, wielding a pair of chipped Nichirin swords. (Source: Wikipedia)

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