第 1 集: 炭治郎在加入宇髓天元前往吉原之前，拜訪了煉獄的家人

Akaza meets Muzan, now disguised as a young boy, who reveals his disappointment on Akaza for not being able to kill the other three Demon Slayers other than Kyojuro. Akaza vows to kill Tanjiro as the latter goes to meet Kyojuro’s brother Senjuro and his father. Their father, a former Flame Hashira but now an alcoholic who detests the Demon Slayers and sees both of his sons as failures, dismisses Tanjiro violently. However, when he sees Tanjiro’s earrings, he explains to him he is a bearer of the first breathing technique, called “Sun Breathing”. Tanjiro headbutts him for disrespecting Kyojuro, knocking him out. Later, Senjuro thanks Tanjiro for passing him his brother’s messages. Four months after Kyojuro's death, Tanjiro, Zenitsu, and Inosuke accompany the Sound Hashira Tengen Uzui to their next mission - infiltrating the famed Yoshiwara red-light district, where demons are said to reside. (Source: Wikipedia)

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