Episode 17

森久保祥太郎

Spider demon (Elder brother) (voice)

細谷佳正

Zenitsu's senior pupil (voice)

千葉繁

Zenitsu's Master (voice)

稲田徹

Spider demon (Father) (voice)

白石涼子

Spider demon (Elder sister) (voice)

Manaka Iwami

Chuntaro (voice)