Currently available on 2 streaming services.

Streaming, rent, or buy UNDER NINJA – Season 1:

Currently you are able to watch "UNDER NINJA - Season 1" streaming on genflix, Crunchyroll.

Cast

Taito Ban
Kuro Kumogakure (voice)
Atsumi Tanezaki
Suzuki (voice)
Tarusuke Shingaki
Kato (voice)
Tasuku Hatanaka
Miracle Hibi (voice)
Kouichi Souma
Ozu (voice)
Chika Anzai
Kawado (voice)
Cho
Oono (voice)