Tanjiro is blown away by the Father Spider Demon's overwhelming power and meets a dysfunctional familial dilemma that launches him in a battle against the sadistic demon Rui.
The Demon Slayer Hashira storms Mt. Natagumo, rescuing the trio and inspiring Inosuke to challenge the superior swordsman before him in a boar-headed test of strength.
The distant memory of his father inspires Tanjiro with a new move to aid him in his fight against Rui.
Rui is visited by memories of his life before becoming a demon.
The Hashira take Tanjiro and Nezuko to the Demon Slayer Corps headquarters where Tanjiro is tried for protecting a demon.
The Hashira discuss Tanjiro's candidacy as a Demon Slayer and question Nezuko's humanity.
The injured Tanjiro, Zenitsu and Inosuke retreat to Shinobu Kocho's mansion and begin their strenuous rehabilitation training regime.
Tanjiro endures rigorous training and struggles to reclaim control of his Total Concentration Breathing. Wax on, wax off.