The arrival of the Hashira shifts the focus to the Demon Slayer Corps rules regarding Tanjiro and Nezuko.
, titled "Against Corps Rules," serves as the emotional conclusion to the Natagumo Mountain Arc, balancing a tragic villain backstory with high-stakes tension between the Hashira . Rui’s Tragic Backstory Kimetsu no Yaiba Episode 21
As he disintegrates, Rui realizes his parents actually intended to die with him out of love. Tanjiro, sensing his grief, shows mercy by placing a hand on his back. In the afterlife, Rui reunites with his parents, who promise to stay with him even in hell. Conflict Within the Corps The arrival of the Hashira shifts the focus
Rui was born with a frail body that left him unable to walk or go outside. Muzan Kibutsuji appeared and "saved" him by turning him into a demon, giving him a powerful body at the cost of consuming humans. Tanjiro, sensing his grief, shows mercy by placing