A recap of Kimetsu no Yaiba episodes 15–21, with new footage and special end credits. 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 fight with possessed swordfighters, they slowly begin to realize the entire mountain is being controlled by a family of Demon spider creatures.
花江夏樹
as Tanjiro Kamado (voice)
鬼頭明里
as Nezuko Kamado (voice)
下野紘
as Zenitsu Agatsuma (voice)
松岡禎丞
as Inosuke Hashibira (voice)
内山昂輝
as Rui (voice)
早見沙織
as Shinobu Kocho (voice)
櫻井孝宏
as Giyu Tomioka (voice)
上田麗奈
as Kanao Tsuyuri (voice)
小清水亜美
as Spider demon (Mother) (voice)
森久保祥太郎
as Spider demon (Brother) (voice)
稲田徹
as Spider demon (Father) (voice)
白石涼子
as Spider demon (Elder sister) (voice)
