Arc 10Mount Natagumo Mission
Teiichi trained Muichiro and advised Tanjiro about Nezuko before Tanjiro, Zenitsu, and Inosuke faced the demons controlling the mountain. The mission ended with Tanjiro confronting Rui and Kanon arriving to help Inosuke against the Spider Father.
- Muichiro defeated Lower Rank Six with Mist Breathing, while Teiichi kept the demon bound until sunrise and Muzan later ordered the Upper Ranks to find Teiichi.
- Muichiro completed his apprenticeship under Teiichi and began training with Tengen, while Teiichi met Tanjiro and warned him that many Corps members would reject Nezuko.
- Tanjiro killed a demon with Teiichi’s guidance, and Tengen took Inosuke as his Tsuguko and sent him on a mission.
- Tanjiro met Zenitsu, and the two joined Inosuke in fighting demons inside a shifting house before they regrouped at a Wisteria House.
- Tanjiro and Inosuke freed Corps members controlled by the Spider Mother and killed her, while Zenitsu defeated Spider Demon Brother despite being poisoned.
- Tanjiro and Inosuke fought Spider Father, while Tanjiro faced Rui and Nezuko shielded him from the demon’s threads.
- Tanjiro used Hinokami Kagura against Rui, who revealed he had severed his own head and took Tanjiro’s sword.
- Kobayashi Kanon arrived as reinforcement, cut through Spider Father’s defenses, and drew Inosuke’s challenge to a duel.