You Must Master a Single Thing

Overview

One of the Twelve Kizuki, a direct subordinate of Muzan Kibutsuji, is here somewhere. When Tanjiro slays the Mother Spider Demon of Mt. Natagumo, he learns that a demon who might hold the key to turning Nezuko back into a human is somewhere in this very forest. With the battered Inosuke in tow, he heads deeper into the forest. Meanwhile, Zenitsu trudges forlornly through the woods only to encounter a spider with a human face.

Guest Stars

Showtaro Morikubo

Spider demon (Elder brother) (voice)

Yoshimasa Hosoya

Zenitsu's senior pupil (voice)

Shigeru Chiba

Zenitsu's Master (voice)

Tetsu Inada

Spider demon (Father) (voice)

Ryoko Shiraishi

Spider demon (Elder sister) (voice)

Manaka Iwami

Chuntaro (voice)