Demon Slayer Chapter 128

Demon Slayer Chapter 128, titled "A Request for Instruction," marks the aftermath of the Swordsmith Village attack, revealing Nezuko Kamado's miraculous immunity to sunlight and the emergence of Demon Slayer Marks among the Hashira, setting the stage for the climactic Hashira Training Arc. The chapter opens with the ongoing rebuilding of the Swordsmith Village, a testament to the lingering threat of demons. Damage was minimal, but the villagers had no time to mourn their dead. In the Butterfly Mansion, Tanjiro Kamado speaks with Goto, who informs him that the village will be relocated. Goto remarks on Tanjiro's hasty eating, noting he had been unconscious for a week, but Tanjiro, unconcerned, mentions that both the Love Hashira, Mitsuri Kanroji, and the Mist Hashira, Muichiro Tokito, have nearly fully recovered in just three days, highlighting their extraordinary resilience. The Kakushi asks about Nezuko, having heard of a remarkable development, to which Tanjiro reveals her ability to withstand sunlight. He explains she is being examined to determine if she is reverting to human form or evolving as a demon. Goto questions if Shinobu Kocho is leading the examination, but Tanjiro corrects him, stating it's Tamayo, much to the Kakushi's annoyance at his correct assumption.

Tanjiro then inquires about Sumi, Kiyo, Naho, and Aoi Kanzaki, learning they've been playing with Nezuko due to the lack of recovery efforts. Goto comments on the temporary peace until the return of Zenitsu Agatsuma, who soon arrives, his screaming immediately annoying Sumi and Aoi. Ecstatic to see Nezuko speaking, Zenitsu showers her with excessive compliments and proposes marriage, much to Aoi's chagrin. When Nezuko suddenly calls him "Inosuke," his happy mood shatters, and he threatens to kill Inosuke Hashibira, who is revealed to have been repeatedly trying to make Nezuko say his name, adding a humorous interlude to the tension. At an emergency Hashira Meeting in the Ubuyashiki Mansion, Sanemi Shinazugawa expresses jealousy at not having faced Upper Ranks, while Obanai Iguro asks Mitsuri and Muichiro about their condition. Mitsuri happily reports a full recovery, and Muichiro confirms he is better but not fully himself. Gyomei Himejima is relieved by their survival and the successful defeat of the Upper Rank demons, while Shinobu is astounded by their rapid recovery. As Giyu Tomioka asks if Kagaya Ubuyashiki will brief them, Amane Ubuyashiki appears in his place, as Kagaya's condition has become too severe.

The Hashira kneel before Amane, with Gyomei praying for Kagaya and Amane's well-being. Amane expresses her gratitude, then informs the Hashira that with Nezuko's resistance to sunlight, Muzan Kibutsuji will now hunt her with renewed vigor, inevitably leading to a large confrontation. She then discusses the marks that manifested on Mitsuri and Muichiro during their battles, hoping they can explain their appearance. She explains that during the Sengoku period, when swordsmen using the first Breathing Style nearly killed Muzan, special marks appeared on their bodies. The Hashira are shocked, having never heard of this phenomenon, and Amane clarifies that little is known about them. What is known is an account by a swordsman who used the first Breathing Style, stating that "when the Marked one arrives, the Mark will appear on others around that person, as if in resonance." Amane reveals that Tanjiro Kamado was the first to be marked, but since he couldn't explain it, she hopes Mitsuri and Muichiro can. Excited to be in the spotlight, Mitsuri offers her explanation: "It hit me like WAAAAH! Like WHOOM! FWAAH! My heart and stuff was all BA-DUMP BA-DUMP and my ears rang like PING! CRICK-CRACK-POP!" The Ubuyashikis and the Hashira stare in bewilderment, and an embarrassed Mitsuri quickly bows and apologizes, wishing she could disappear into a hole. Muichiro then steps forward, stating that while he doesn't know about the mark itself, he can explain certain remembered factors that might help them understand more, promising crucial insights into the mystery of the Demon Slayer Marks in the climactic Hashira Training Arc of the Demon Slayer manga.