, 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
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. Kimetsu no Yaiba Episode 21
The episode ends with a bound Tanjiro waking up at the Demon Slayer Headquarters, surrounded by the elite Hashira. Demon Slayer: Kimetsu no Yaiba Episode 21 Review , titled "Against Corps Rules," serves as the
The conflict is halted by a Kasugai Crow delivering orders to take Tanjiro and Nezuko into custody. The episode ends with a bound Tanjiro waking
Shinobu Kocho attempts to kill Nezuko, but Giyu Tomioka intervenes to protect them, violating the code he previously upheld.