Under Ninja
| Under Ninja | |
Cover of the first volume  | |
| アンダーニンジャ (Andā Ninja)  | |
|---|---|
| Genre | Action, comedy | 
| Manga | |
| Written by | Kengo Hanazawa | 
| Published by | Kodansha | 
| English publisher | |
| Imprint | Young Magazine KC | 
| Magazine | Weekly Young Magazine | 
| Demographic | Seinen | 
| Original run | July 23, 2018 – present | 
| Volumes | 15 | 
| Anime television series | |
| Directed by | Satoshi Kuwabara | 
| Written by | Keiichirō Ōchi | 
| Music by | Shōta Kowashi | 
| Studio | Tezuka Productions | 
| Licensed by | Crunchyroll | 
| Original network | TBS, BS11 | 
| Original run | October 6, 2023 – December 22, 2023 | 
| Episodes | 12 | 
| Live-action film | |
| Directed by | Yūichi Fukuda | 
| Written by | Yūichi Fukuda | 
| Released | January 24, 2025 | 
Under Ninja (Japanese: アンダーニンジャ, Hepburn: Andā Ninja) is a Japanese manga series written and illustrated by Kengo Hanazawa. It has been serialized in Kodansha's Weekly Young Magazine since July 2018. An anime television series adaptation by Tezuka Productions aired from October to December 2023. A live-action film adaptation premiered in Japanese theaters in January 2025.