Tanjiro, now a registered Demon Slayer, teams up with fellow slayers Zenitsu and Inosuke to investigate missing person cases on the mountain Natagumo. After the group is split up during a battle with possessed swordfighters, they slowly begin to realize the entire mountain is being controlled by a clan of Demon spider creatures. A recap of Kimetsu no Yaiba episodes 15–21, with new footage and special end credits.
Akari Kito
Nezuko Kamado (voice)Yoshitsugu Matsuoka
Inosuke Hashibira (voice)Reina Ueda
Kanao Tsuyuri (voice)Takahiro Sakurai
Giyu Tomioka (voice)Saori Hayami
Shinobu Kocho (voice)Hiro Shimono
Zenitsu Agatsuma (voice)Natsuki Hanae
Tanjiro Kamado (voice)Koki Uchiyama
Rui (voice)