Tanjiro and Zenitsu reach Gyomei Himejima's mountain training site, where brutal waterfall, log, and boulder drills await. Tanjiro struggles for days until Genya teaches him Repetitive Action, finally letting him channel his Demon Slayer Mark to move the immense rock.
Episode 61, the sixth installment of the fourth season, adapts Chapter 134 and the opening of Chapter 135. It centers on the Stone Hashira's segment of the Hashira Training, a three-stage gauntlet of standing under a waterfall, pressing bound logs overhead, and pushing a boulder roughly one cho. Tanjiro reunites with Inosuke and Murata while Zenitsu suffers in the winter cold, and the episode tracks Tanjiro's slow progress toward the breakthrough that lets him shift the rock.
Gyomei stresses that a strong lower body is the foundation for both offense and defense. Zenitsu nearly freezes under the waterfall, Inosuke needs CPR after going silent beneath it, and Tanjiro learns from Murata to chant the Nenbutsu to stay focused and conscious while enduring the torrent.
Between sessions Tanjiro grills fish and shapes onigiri for the trainees, even adding extra salt and miso flavor, and his kindness earns him the affectionate nickname of their mom. He also encourages three trainees who quit, reframing their move to support roles as a vital part of severing Muzan's head.
Genya arrives, apologizes for the earlier trouble with Sanemi, and reveals he learned Repetitive Action by watching Gyomei. By recalling memories of pain and anger to raise his heart rate, then thinking of his family and Rengoku's words, Tanjiro finally awakens his mark and begins pushing the boulder forward. Meanwhile, Nakime uses her detached eyes and biwa to scout the Corps for Muzan.
The first eyecatcher loosely recreates the cover of Chapter 134. The anime expands several manga moments: Murata delivering the explanation of the Nenbutsu, an added scene of Zenitsu nearly drowning, the three quitting trainees taking support roles with new designs, and a family dinner memory for Tanjiro. It also extends the Nakime sequence to show how her crawling eyes feed her shifting vision, and adds an original scene of Muzan wondering about Kagaya's plan and current appearance.

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Episode 61 follows Tanjiro and Zenitsu reaching Gyomei Himejima's mountain training site for the Stone Hashira's segment of the Hashira Training, a three-stage gauntlet of standing under a waterfall, pressing bound logs overhead, and pushing a boulder. Tanjiro struggles for days until Genya teaches him Repetitive Action, which lets him channel his Demon Slayer Mark to move the immense rock.
Episode 61, the sixth installment of the fourth season, adapts Chapter 134 and the opening of Chapter 135 of the Demon Slayer manga. The first eyecatcher loosely recreates the cover of Chapter 134.
In Episode 61, Genya teaches Tanjiro the Repetitive Action technique, which Genya learned by watching Gyomei. By recalling memories of pain and anger to raise his heart rate, then thinking of his family and Rengoku's words, Tanjiro finally awakens his mark and begins pushing the boulder forward.
In Episode 61, Tanjiro grills fish and shapes onigiri for the trainees between sessions, even adding extra salt and miso flavor, and his kindness earns him the affectionate nickname of their mom. He also encourages three trainees who quit by reframing their move to support roles as a vital part of severing Muzan's head.
In Episode 61, Nakime uses her detached eyes and biwa to scout the Demon Slayer Corps for Muzan. The anime extends this sequence to show how her crawling eyes feed her shifting vision.
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