Hashira infinity

Muzan Kibutsuji traps the Demon Slayer Corps within his shifting dimensional fortress, forcing Hashira and slayers into brutal, desperate fights against the remaining Upper Rank demons. Key events include the deaths of Shinobu Kocho, Zenitsu’s fight against his former senior Kaigaku, and the intense, tragic battle against Upper Rank Three Akaza. Shinobu Kocho vs. Upper Rank Two Doma: Shinobu uses her body as a final, deadly dose of poison, but Doma consumes her, ultimately killing her before Inosuke and Kanao Tsuyuri arrive to finish him. Tanjiro and Giyu vs. Upper Rank Three Akaza: The pair fight Akaza, who reveals his tragic human past. Through the use of the "Transparent World" and Sun Breathing, they defeat him. Zenitsu vs. Upper Rank Six Kaigaku: Zenitsu faces his former senior who betrayed their master, using a personal form of Thunder Breathing to win. The Hashira vs. Upper Rank One Kokushibo: A massive showdown featuring Gyomei, Sanemi, Muichiro, and Genya against the strongest Upper Rank. Muzan's Strategy: The Demon King uses the shifting, labyrinthine castle to separate the slayers, exhausting them with hordes of strong demons. Tamayo's Interference: Tamayo, with the help of Yushiro, works within the castle to weaken Muzan using specific, specialized drugs.