{{Short description|Japanese manga series}} {{Use mdy dates|date=November 2020}} {{Infobox animanga/Header | image = Under Ninja manga vol. 1.png | caption = Cover of the first volume | ja_kanji = アンダーニンジャ | ja_romaji = Andā Ninja | genre = [[Action fiction|Action]], [[comedy]]<ref>{{cite web|last=Luster|first=Joseph|title=Under Ninja Anime Reveals Five More Voice Actors|url=https://otakuusamagazine.com/under-ninja-anime-reveals-five-more-voice-actors/|website=[[Otaku USA]]|access-date=November 6, 2023|date=May 8, 2023|archive-date=November 6, 2023|archive-url=https://web.archive.org/web/20231106053502/https://otakuusamagazine.com/under-ninja-anime-reveals-five-more-voice-actors/|url-status=live}}</ref><!-- Note: Use and cite reliable sources to identify genre/s, not personal interpretation. Please don't include more than three genres (per [[MOS:A&M]]). --> }} {{Infobox animanga/Print | type = manga | author = [[Kengo Hanazawa]] | publisher = [[Kodansha]] | publisher_en = {{English manga publisher | NA = [[Denpa (company)|Denpa]] }} | imprint = Young Magazine KC | magazine = [[Weekly Young Magazine]] | first = July 23, 2018 | last = | volumes = 17 | volume_list = }} {{Infobox animanga/Video | type = tv series | director = Satoshi Kuwabara | writer = Keiichirō Ōchi | music = Shōta Kowashi | studio = [[Tezuka Productions]] | licensee = [[Crunchyroll]] | network = [[TBS Television (Japan)|TBS]], [[Nippon BS Broadcasting|BS11]] | first = October 6, 2023 | last = December 22, 2023 | episodes = 12 | episode_list = }} {{Infobox animanga/Video | type = live film | director = Yūichi Fukuda | producer = | writer = Yūichi Fukuda | music = | studio = | released = {{Start date|2025|01|24}} | runtime = }} {{Infobox animanga/Footer|portal=yes}} {{Nihongo|'''''Under Ninja'''''|アンダーニンジャ|Andā Ninja|lead=yes}} 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.
==Plot== The [[ninja]] organization in Japan, which once flourished, was dismantled by the [[Supreme Commander for the Allied Powers|GHQ]] after the [[Pacific War]] and disappeared. However, the ninja still exist in secret, and it is said that there are 200,000 of them living in Japan today, hiding and working in the dark in the public and private sectors and in all kinds of organizations. While some of the elite ninja work behind the scenes in national level conflicts, the ninja at the end of the line are often unable to find work. One of them, Kuro Kumogakure, who is living the life of a [[NEET]], receives a serious "ninja assignment," an order from his superiors to infiltrate a high school with the latest equipment.
==Characters== ;{{Nihongo|Kurō Kumogakure|雲隠 九郎|Kumogakure Kurō}} :{{Voiced by|[[Taito Ban]]<ref name="Cast">{{cite web|title=Under Ninja TV Anime Announces Main Cast|url=https://www.animenewsnetwork.com/news/2023-05-06/under-ninja-tv-anime-announces-main-cast/.197830|website=[[Anime News Network]]|last=Loo|first=Egan|date=May 6, 2023|access-date=May 6, 2023|archive-date=May 6, 2023|archive-url=https://web.archive.org/web/20230506153735/https://www.animenewsnetwork.com/news/2023-05-06/under-ninja-tv-anime-announces-main-cast/.197830|url-status=live}}</ref>}} :{{Portrayed by|[[Kento Yamazaki]]<ref name="LA-cast"/>}} ;{{Nihongo|Katō|加藤}} :{{Voiced by|[[Tarusuke Shingaki]]<ref name="Cast"/>}} :{{Portrayed by|[[Shotaro Mamiya]]<ref name="LA-cast2">{{cite web|last=Tai|first=Anita|title=Live-Action Under Ninja Film Casts Shōtarō Mamiya, Mai Shiraishi|url=https://www.animenewsnetwork.com/news/2024-09-23/live-action-under-ninja-film-casts-shotaro-mamiya-mai-shiraishi/.215914|website=[[Anime News Network]]|access-date=September 24, 2024|archive-url=https://web.archive.org/web/20240924021350/https://www.animenewsnetwork.com/news/2024-09-23/live-action-under-ninja-film-casts-shotaro-mamiya-mai-shiraishi/.215914|archive-date=September 24, 2024|date=September 23, 2024|url-status=live}}</ref>}} ;{{Nihongo|Miracle Hibi|日比 奇跡|Hibi Mirakuru}} :{{Voiced by|[[Tasuku Hatanaka]]<ref name="Cast"/>}} ;{{Nihongo|Suzuki|鈴木}} :{{Voiced by|[[Atsumi Tanezaki]]<ref name="Cast"/>}} :{{Portrayed by|[[Mai Shiraishi]]<ref name="LA-cast2"/>}} ;{{Nihongo|Shion Hachiya|蜂谷 紫音|Hachiya Shion}} :{{Voiced by|[[Daiki Yamashita]]<ref name="Cast"/>}} :{{Portrayed by|[[Ryubi Miyase]]<ref name="LA-cast3"/>}} ;{{Nihongo|Kawado|川戸}} :{{Voiced by|[[Chika Anzai]]<ref name="Cast2">{{cite web|title=Under Ninja TV Anime Reveals 4 More Cast Members|url=https://www.animenewsnetwork.com/news/2023-07-13/under-ninja-tv-anime-reveals-4-more-cast-members/.200231|website=[[Anime News Network]]|last=Hodgkins|first=Crystalyn|date=July 13, 2023|access-date=July 13, 2023|archive-date=July 13, 2023|archive-url=https://web.archive.org/web/20230713110512/https://www.animenewsnetwork.com/news/2023-07-13/under-ninja-tv-anime-reveals-4-more-cast-members/.200231|url-status=live}}</ref>}} :{{Portrayed by|[[Haruka Kinami]]<ref name="LA-cast4">{{cite web|last=Mateo|first=Alex|title=Live-Action Under Ninja Film Reveals 4 More Cast Members|url=https://www.animenewsnetwork.com/news/2024-11-11/live-action-under-ninja-film-reveals-4-more-cast-members/.217747|website=[[Anime News Network]]|access-date=November 11, 2024|date=November 11, 2024|archive-url=https://web.archive.org/web/20241112011155/https://www.animenewsnetwork.com/news/2024-11-11/live-action-under-ninja-film-reveals-4-more-cast-members/.217747|archive-date=November 12, 2024|url-status=live}}</ref>}} ;{{Nihongo|Ōno|大野}} :{{Voiced by|[[Chō]]<ref name="Cast2"/>}} :{{Portrayed by|[[Tsuyoshi Muro]]<ref name="LA-cast4"/>}} ;{{Nihongo|Eita|瑛太}} :{{Voiced by|{{ill|Shūichi Uchida|ja|内田修一}}<ref name="Cast2"/>}} :{{Portrayed by|{{ill|Ryо̄tarо̄ Sakaguchi|ja|坂口涼太郎}}<ref name="LA-cast3">{{cite web|last=Mateo|first=Alex|title=Live-Action Under Ninja Film Reveals 5 More Cast Members|url=https://www.animenewsnetwork.com/news/2024-10-23/live-action-under-ninja-film-reveals-5-more-cast-members/.217099|website=[[Anime News Network]]|access-date=October 24, 2024|date=October 23, 2024}}</ref>}} ;{{Nihongo|Noguchi|野口}} :{{Voiced by|[[Sora Tokui]]<ref name="Cast2"/>}} :{{Portrayed by|[[Minami Hamabe]]<ref name="LA-cast"/>}} ;{{Nihongo|Ozu|小津}} :{{Voiced by|{{ill|Kōichi Sōma|ja|相馬康一}}<ref name="Cast3"/>}} ;{{Nihongo|Saruta|猿田}} :{{Portrayed by|[[Amane Okayama]]<ref name="LA-cast3"/>}} ;{{Nihongo|Mitsuki Yamada|山田美月|Yamada Mitsuki}} :{{Portrayed by|[[Chihiro Yamamoto]]<ref name="LA-cast3"/>}} ;{{Nihongo|Principal|主事|Shuji}} :{{Portrayed by|[[Mitsuru Hirata]]<ref name="LA-cast3"/>}} ;{{Nihongo|Homeroom Teacher|担任|Tan'nin}} :{{Portrayed by|{{ill|Shinobu Hasegawa|ja|長谷川忍}}<ref name="LA-cast4"/>}} ;{{Nihongo|Akikazu Yoshida|吉田昭和|Yoshida Akikazu}} :{{Portrayed by|[[Jiro Sato (actor)|Jiro Sato]]<ref name="LA-cast4"/>}}
==Media== ===Manga=== ''Under Ninja'', written and illustrated by [[Kengo Hanazawa]], started in [[Kodansha]]'s [[Seinen manga|{{Transliteration|ja|seinen}} manga]] magazine ''[[Weekly Young Magazine]]'' on July 23, 2018.<ref>{{cite web|last=Pineda|first=Rafael Antonio|title=Kengo Hanazawa's New Manga's Title, July Debut Revealed|url=https://www.animenewsnetwork.com/news/2018-05-07/kengo-hanazawa-new-manga-title-july-debut-revealed/.131243|website=[[Anime News Network]]|access-date=November 18, 2020|date=May 7, 2018|archive-date=October 28, 2020|archive-url=https://web.archive.org/web/20201028163755/https://www.animenewsnetwork.com/news/2018-05-07/kengo-hanazawa-new-manga-title-july-debut-revealed/.131243|url-status=live}}</ref><ref>{{cite web|script-title=ja:花沢健吾の新連載「アンダーニンジャ」ヤンマガで始動、現代を生きるニート忍者描く|url=https://natalie.mu/comic/news/292193|website=[[Comic Natalie]]|publisher=Natasha, Inc|access-date=November 18, 2020|language=ja|date=July 23, 2018|archive-date=November 4, 2021|archive-url=https://web.archive.org/web/20211104060926/https://natalie.mu/comic/news/292193|url-status=live}}</ref><ref>{{cite web|script-title=ja:週刊 ヤングマガジン 2018 #34|url=https://magazine.yanmaga.jp/ym/2018/2018-34.html|website=YanMaga Web|publisher=[[Kodansha]]|access-date=November 18, 2020|archive-url=https://web.archive.org/web/20200804075223/https://magazine.yanmaga.jp/ym/2018/2018-34.html|archive-date=August 4, 2020|language=ja|url-status=live}}</ref> Kodansha has collected its chapters into individual {{Transliteration|ja|[[tankōbon]]}} volumes. The first volume was released on February 6, 2019.<ref name="JPvol1"/> As of March 6, 2026, 17 volumes have been released.<ref name="JPvol17"/>
In North America, [[Denpa (company)|Denpa]] announced the English language release of the manga in July 2020.<ref>{{cite web|last1=Hodgkins|first1=Crystalyn|last2=Mateo|first2=Alex|title=Denpa Licenses Romy Oishi, meshe's Lockdown Zone: Level X, Kengo Hanazawa's Under Ninja Manga|url=https://www.animenewsnetwork.com/news/2020-07-03/denpa-licenses-romy-oishi-meshe-lockdown-zone-level-x-kengo-hanazawa-under-ninja-manga/.161399|website=[[Anime News Network]]|access-date=July 4, 2020|date=July 3, 2020|archive-date=July 5, 2020|archive-url=https://web.archive.org/web/20200705204659/https://www.animenewsnetwork.com/news/2020-07-03/denpa-licenses-romy-oishi-meshe-lockdown-zone-level-x-kengo-hanazawa-under-ninja-manga/.161399|url-status=live}}</ref>
====Volumes==== {{Graphic novel list/header |Language = Japanese |Width = 100% |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 1 |OriginalRelDate = February 6, 2019<ref name="JPvol1">{{cite web|script-title=ja:アンダーニンジャ（１）|url=https://kc.kodansha.co.jp/product?item=0000319742|publisher=[[Kodansha]]|access-date=November 18, 2020|language=ja|archive-date=November 19, 2020|archive-url=https://web.archive.org/web/20201119134722/https://kc.kodansha.co.jp/product?item=0000319742|url-status=live}}</ref> |OriginalISBN = 978-4-06-514569-2 |LicensedRelDate = January 10, 2023<ref>{{cite web|last=Mateo|first=Alex|title=North American Anime, Manga Releases, January 8–14|url=https://www.animenewsnetwork.com/news/2023-01-10/north-american-anime-manga-releases-january-8-14/.193693|website=[[Anime News Network]]|access-date=February 25, 2023|date=January 10, 2023|archive-date=February 25, 2023|archive-url=https://web.archive.org/web/20230225113641/https://www.animenewsnetwork.com/news/2023-01-10/north-american-anime-manga-releases-january-8-14/.193693|url-status=live}}</ref> |LicensedISBN = 978-1-63-442992-4 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 2 |OriginalRelDate = August 6, 2019<ref>{{cite web|script-title=ja:アンダーニンジャ（２）|url=https://kc.kodansha.co.jp/product?item=0000323945|publisher=[[Kodansha]]|access-date=November 18, 2020|language=ja|archive-date=December 4, 2020|archive-url=https://web.archive.org/web/20201204062144/https://kc.kodansha.co.jp/product?item=0000323945|url-status=live}}</ref> |OriginalISBN = 978-4-06-516733-5 |LicensedRelDate = August 29, 2023<ref>{{cite book|title=Under Ninja Volume 2|date=August 29, 2023|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442927-6}}</ref> |LicensedISBN = 978-1-63-442927-6 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 3 |OriginalRelDate = February 6, 2020<ref>{{cite web|script-title=ja:アンダーニンジャ（３）|url=https://kc.kodansha.co.jp/product?item=0000328491|publisher=[[Kodansha]]|access-date=November 18, 2020|language=ja|archive-date=December 1, 2020|archive-url=https://web.archive.org/web/20201201213637/https://kc.kodansha.co.jp/product?item=0000328491|url-status=live}}</ref> |OriginalISBN = 978-4-06-518477-6 |LicensedRelDate = November 21, 2023<ref>{{cite book|title=Under Ninja Volume 3|date=November 21, 2023|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442838-5}}</ref> |LicensedISBN = 978-1-63-442838-5 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 4 |OriginalRelDate = September 4, 2020<ref>{{cite web|script-title=ja:アンダーニンジャ（４）|url=https://kc.kodansha.co.jp/product?item=0000344318|publisher=[[Kodansha]]|access-date=November 18, 2020|language=ja|archive-date=November 30, 2020|archive-url=https://web.archive.org/web/20201130082109/https://kc.kodansha.co.jp/product?item=0000344318|url-status=live}}</ref> |OriginalISBN = 978-4-06-520682-9 |LicensedRelDate = October 29, 2024<ref>{{cite book|title=Under Ninja Volume 4|date=October 29, 2024|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442863-7}}</ref> |LicensedISBN = 978-1-63-442863-7 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 5 |OriginalRelDate = March 5, 2021<ref>{{cite web|script-title=ja:アンダーニンジャ（５）|url=https://kc.kodansha.co.jp/product?item=0000349992|publisher=[[Kodansha]]|access-date=March 6, 2021|language=ja|archive-date=March 5, 2021|archive-url=https://web.archive.org/web/20210305030105/https://kc.kodansha.co.jp/product?item=0000349992|url-status=live}}</ref> |OriginalISBN = 978-4-06-522595-0 |LicensedRelDate = January 7, 2025<ref>{{cite book|title=Under Ninja Volume 5|date=January 7, 2025|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442880-4}}</ref> |LicensedISBN = 978-1-63-442880-4 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 6 |OriginalRelDate = September 6, 2021<ref>{{cite web|script-title=ja:アンダーニンジャ（６）|url=https://kc.kodansha.co.jp/product?item=0000355151|publisher=[[Kodansha]]|access-date=September 5, 2021|language=ja|archive-date=September 5, 2021|archive-url=https://web.archive.org/web/20210905180024/https://kc.kodansha.co.jp/product?item=0000355151|url-status=live}}</ref> |OriginalISBN = 978-4-06-524754-9 |LicensedRelDate = March 25, 2025<ref>{{cite book|title=Under Ninja Volume 6|date=March 25, 2025|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442885-9}}</ref> |LicensedISBN = 978-1-63-442885-9 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 7 |OriginalRelDate = March 4, 2022<ref>{{cite web|script-title=ja:アンダーニンジャ（７）|url=https://kc.kodansha.co.jp/product?item=0000362454|publisher=[[Kodansha]]|access-date=February 22, 2022|language=ja|archive-date=February 22, 2022|archive-url=https://web.archive.org/web/20220222092432/https://kc.kodansha.co.jp/product?item=0000362454|url-status=live}}</ref> |OriginalISBN = 978-4-06-527060-8 |LicensedRelDate = June 24, 2025<ref>{{cite book|title=Under Ninja Volume 7|date=June 24, 2025|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442887-3}}</ref> |LicensedISBN = 978-1-63-442887-3 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 8 |OriginalRelDate = August 5, 2022<ref>{{cite web|script-title=ja:アンダーニンジャ（８）|url=https://kc.kodansha.co.jp/product?item=0000368232|publisher=[[Kodansha]]|access-date=July 11, 2022|language=ja|archive-date=July 11, 2022|archive-url=https://web.archive.org/web/20220711101140/https://kc.kodansha.co.jp/product?item=0000368232|url-status=live}}</ref> |OriginalISBN = 978-4-06-528810-8 |LicensedRelDate = March 2026<ref>{{cite book|title=Under Ninja Volume 8|date=March 2026|publisher=[[Denpa (company)|Denpa]]|isbn=978-1-63-442711-1}}</ref> |LicensedISBN = 978-1-63-442711-1 |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 9 |OriginalRelDate = January 6, 2023<ref>{{cite web|script-title=ja:アンダーニンジャ（９）|url=https://kc.kodansha.co.jp/product?item=0000372741|publisher=[[Kodansha]]|access-date=November 28, 2022|language=ja|archive-date=November 28, 2022|archive-url=https://web.archive.org/web/20221128150218/https://kc.kodansha.co.jp/product?item=0000372741|url-status=live}}</ref> |OriginalISBN = 978-4-06-530398-6 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 10 |OriginalRelDate = May 8, 2023<ref>{{cite web|script-title=ja:アンダーニンジャ（１０）|url=https://kc.kodansha.co.jp/product?item=0000376944|publisher=[[Kodansha]]|access-date=April 14, 2023|language=ja|archive-date=April 14, 2023|archive-url=https://web.archive.org/web/20230414211129/https://kc.kodansha.co.jp/product?item=0000376944|url-status=live}}</ref> |OriginalISBN = 978-4-06-531894-2 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 11 |OriginalRelDate = September 6, 2023<ref>{{cite web|script-title=ja:アンダーニンジャ（１１）|url=https://kc.kodansha.co.jp/product?item=0000380598|publisher=[[Kodansha]]|access-date=September 25, 2023|language=ja|archive-date=September 6, 2023|archive-url=https://web.archive.org/web/20230906093612/https://kc.kodansha.co.jp/product?item=0000380598|url-status=live}}</ref> |OriginalISBN = 978-4-06-533003-6 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 12 |OriginalRelDate = February 6, 2024<ref>{{cite web|script-title=ja:アンダーニンジャ（１２）|url=https://kc.kodansha.co.jp/product?item=0000385939|publisher=[[Kodansha]]|access-date=January 19, 2024|language=ja|archive-date=April 14, 2024|archive-url=https://web.archive.org/web/20240414234024/https://kc.kodansha.co.jp/product?item=0000385939|url-status=live}}</ref> |OriginalISBN = 978-4-06-534600-6 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 13 |OriginalRelDate = July 5, 2024<ref name="JPvol13">{{cite web|script-title=ja:アンダーニンジャ（１３）|url=https://kc.kodansha.co.jp/product?item=0000395171|publisher=[[Kodansha]]|access-date=September 2, 2024|language=ja|archive-date=July 6, 2024|archive-url=https://web.archive.org/web/20240706114040/https://kc.kodansha.co.jp/product?item=0000395171|url-status=live}}</ref> |OriginalISBN = 978-4-06-536272-3 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 14 |OriginalRelDate = December 6, 2024<ref name="JPvol14">{{cite web|script-title=ja:アンダーニンジャ（１４）|url=https://kc.kodansha.co.jp/product?item=0000404792|publisher=[[Kodansha]]|access-date=November 9, 2024|language=ja|archive-date=November 9, 2024|archive-url=https://web.archive.org/web/20241109122918/https://kc.kodansha.co.jp/product?item=0000404792|url-status=live}}</ref> |OriginalISBN = 978-4-06-537900-4 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 15 |OriginalRelDate = April 4, 2025<ref name="JPvol15">{{cite web|script-title=ja:アンダーニンジャ（１５）|url=https://kc.kodansha.co.jp/product?item=0000411379|publisher=[[Kodansha]]|access-date=March 8, 2025|language=ja|archive-date=March 8, 2025|archive-url=https://web.archive.org/web/20250308023302/https://kc.kodansha.co.jp/product?item=0000411379|url-status=live}}</ref> |OriginalISBN = 978-4-06-539224-9 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 16 |OriginalRelDate = October 6, 2025<ref name="JPvol16">{{cite web|script-title=ja:アンダーニンジャ（１６）|url=https://www.kodansha.co.jp/comic/products/0000419163|publisher=[[Kodansha]]|access-date=September 9, 2025|language=ja|archive-date=September 9, 2025|archive-url=https://web.archive.org/web/20250909004934/https://www.kodansha.co.jp/comic/products/0000419163|url-status=live}}</ref> |OriginalISBN = 978-4-06-541134-6 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list |VolumeNumber = 17 |OriginalRelDate = March 6, 2026<ref name="JPvol17">{{cite web|script-title=ja:アンダーニンジャ（１７）|url=https://www.kodansha.co.jp/comic/products/0000424941|publisher=[[Kodansha]]|access-date=January 29, 2026|language=ja|archive-date=January 29, 2026|archive-url=https://web.archive.org/web/20260129162951/https://www.kodansha.co.jp/comic/products/0000424941|url-status=live}}</ref> |OriginalISBN = 978-4-06-542876-4 |LicensedRelDate = — |LicensedISBN = |ChapterList = |Summary = |LineColor = 50C878 }} {{Graphic novel list/footer}}
===Anime=== On September 6, 2021, it was announced that the series would receive an [[anime]] television series adaptation.<ref>{{cite web|title=Kengo Hanazawa's Under Ninja Manga Gets TV Anime|url=https://www.animenewsnetwork.com/news/2021-09-05/kengo-hanazawa-under-ninja-manga-gets-tv-anime/.176969|website=[[Anime News Network]]|last=Hazra|first=Adriana|date=September 5, 2021|access-date=September 5, 2021|archive-date=September 6, 2021|archive-url=https://web.archive.org/web/20210906005309/https://www.animenewsnetwork.com/news/2021-09-05/kengo-hanazawa-under-ninja-manga-gets-tv-anime/.176969|url-status=live}}</ref> It is produced by [[Tezuka Productions]] and directed by Satoshi Kuwabara, with scripts supervised by Keiichirō Ōchi, character designs by [[Nobuteru Yūki]], and music composed by Shōta Kowashi. The series aired from October 6 to December 22, 2023, on [[TBS Television (Japan)|TBS]] and [[Nippon BS Broadcasting|BS11]].<ref>{{cite web|script-title=ja:TVアニメ「アンダーニンジャ」今秋放送開始、2月22日の“忍者の日”に新ビジュ公開|url=https://natalie.mu/comic/news/513983|website=[[Comic Natalie]]|publisher=Natasha, Inc|access-date=February 22, 2023|language=ja|date=February 22, 2023|archive-date=July 10, 2023|archive-url=https://web.archive.org/web/20230710164518/https://natalie.mu/comic/news/513983|url-status=live}}</ref>{{efn|TBS lists the series premiere on October 5 at 25:43, which is effectively October 6 at 1:43 a.m. [[Japan Standard Time|JST]].<ref>{{cite web|script-title=ja:『アンダーニンジャ』新キービジュアル＆PV公開！ OPテーマはKroiの「Hyper」に決定|url=https://www.animatetimes.com/news/details.php?id=1692345358|website=[[Animate Times]]|access-date=August 18, 2023|language=ja|date=August 18, 2023|archive-date=August 18, 2023|archive-url=https://web.archive.org/web/20230818121929/https://www.animatetimes.com/news/details.php?id=1692345358|url-status=live}}</ref>}} The opening theme song is "Hyper" by Kroi.<ref name="Cast3">{{cite web|title=Under Ninja Anime Reveals Promo Video, More Cast, October 5 Premiere|url=https://www.animenewsnetwork.com/news/2023-08-18/under-ninja-anime-reveals-promo-video-more-cast-october-5-premiere/.201399|website=[[Anime News Network]]|last=Hodgkins|first=Crystalyn|date=August 18, 2023|access-date=August 18, 2023|archive-date=August 18, 2023|archive-url=https://web.archive.org/web/20230818121414/https://www.animenewsnetwork.com/news/2023-08-18/under-ninja-anime-reveals-promo-video-more-cast-october-5-premiere/.201399|url-status=live}}</ref> [[Crunchyroll]] streamed the series outside of Asia.<ref>{{cite web|title=Crunchyroll Announces Release Schedule for Fall 2023 Anime Season|url=https://www.animenewsnetwork.com/news/2023-09-20/crunchyroll-announces-release-schedule-for-fall-2023-anime-season/.202573|website=[[Anime News Network]]|last=Mateo|first=Alex|date=September 20, 2023|access-date=September 20, 2023|archive-date=September 20, 2023|archive-url=https://web.archive.org/web/20230920202344/https://www.animenewsnetwork.com/news/2023-09-20/crunchyroll-announces-release-schedule-for-fall-2023-anime-season/.202573|url-status=live}}</ref>
====Episodes==== {{Episode table |background=#50C878 |overall= |title= |titleR=<ref>{{cite web|url=https://under-ninja.jp/story/|title=Sutōrī｜"Andā Ninja" Terebi Anime Kōshiki Saito|language=ja|script-title=ja:『アンダーニンジャ』TVアニメ公式サイト|trans-title=Story｜"Under Ninja" TV Anime Official Website|website=under-ninja.jp|access-date=October 6, 2023|archive-date=September 30, 2023|archive-url=https://web.archive.org/web/20230930224047/https://under-ninja.jp/story/|url-status=live}}</ref> |director= |directorR={{efn|name=credits|Information is taken from the ending credits of each episode.}} |writer= |writerR={{efn|name=credits}} |aux2= |aux2T=Storyboarded by |aux2R={{efn|name=credits}} |airdate= |airdateR=<ref>{{cite web|url=https://under-ninja.jp/onair/|title="Andā Ninja" Terebi Anime Kōshiki Saito|language=ja|script-title=ja:『アンダーニンジャ』TVアニメ公式サイト|trans-title="Under Ninja" TV Anime Official Website|website=under-ninja.jp|access-date=October 6, 2023|archive-date=September 30, 2023|archive-url=https://web.archive.org/web/20230930052454/https://under-ninja.jp/onair/|url-status=live}}</ref> |episodes= {{Episode list | EpisodeNumber = 1 | Title = Throw a Rock, Hit a Ninja | TranslitTitle = Ishi o Nagereba Ninja ni Ataru | NativeTitle = 石を投げれば忍者に当たる | NativeTitleLangCode = ja | DirectedBy = Kimiharu Mutou | WrittenBy = Keiichirō Ōchi | Aux2 = Satoshi Kuwabara | OriginalAirDate = {{start date|2023|10|6}} | ShortSummary = Two small groups of ninjas from neighboring school buildings stare each other down, threatening to take action. The scene flashes back to two months earlier, where an unemployed high-school dropout named Kurō Kumogakure is given a modern ninja hoodie along with orders to infiltrate a local high school. After helping out his neighbor Kawado, and giving her some beer that he stole from another neighbor named Ōno, she agrees to pose as his mother to enroll him in the school. Meanwhile, a Russian man loudly tries to meet a ninja on his own. | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 2 | Title = I Want to Be a Ninja | TranslitTitle = Watashi wa Ninja ni Naritai | NativeTitle = 私は忍者になりたい | NativeTitleLangCode = ja | DirectedBy = Taiji Kanawashi | WrittenBy = Keiichirō Ōchi | Aux2 = Satoshi Kuwabara | OriginalAirDate = {{start date|2023|10|13}} | ShortSummary = In the present, Kuro continues his duel with a high school girl from an opposing school. Back in July, the Russian man finds a {{Transliteration|ja|[[torii]]}} scrawled on a utility pole with a message nearby warning people not to piss in public or their dicks will be cut off. The Russian's handler tells him to find and infiltrate a ninja clan in order to keep his baby daughter alive. Thinking the message is a ninja code, he begins to cut off the dicks of anyone pissing outside nearby. However, he starts to build a reputation as the Nerima Slasher, especially after a failed attempt to attack a gross man who turns out to have real ninja skills and a fake dick. Kuro is then given the assignment by Kato to find this Nerima Slasher and take him out. As a young girl manages to find the Russian hiding under a shrine, Kato and Sasama talk about the current state of ninja affairs. | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 3 | Title = Boobs: So Close, Yet So Far | TranslitTitle = Oppai wa Chikakute Tōi Sonzai | NativeTitle = オッパイは近くて遠い存在 | NativeTitleLangCode = ja | DirectedBy = Mie Matsushima | WrittenBy = Keiichirō Ōchi | Aux2 = Satoshi Kuwabara | OriginalAirDate = {{start date|2023|10|20}} | ShortSummary = In the present, Kuro injures his opponent's arm by slamming it into a railing, while one of his teammates attacks her gyaru allies. Back in July, Kuro set a trap for Kawado's bra thief, only to find it was a high school boy. After covering for him, Kuro deputizes the boy to help him find the Nerima Slasher, and the boy later hands the task to a little girl at his apartment block in exchange for letting her fly his drone. Some time later, the girl finds the Russian man and takes him to her apartment, then shows him to the boy to play with the drone. The boy then tells Kuro, but the message goes out to multiple ninja in the area, who all converge on the same apartment block to take out the Russian man. | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 4 | Title = Do You Know What the Ninja Code Says? | TranslitTitle = Shinobi no Okite wa Wakatteiruna? | NativeTitle = 忍びの掟は分かっているな？ | NativeTitleLangCode = ja | DirectedBy = Satoru Yamashita | WrittenBy = Keiichirō Ōchi | Aux2 = Wataru Chihara | OriginalAirDate = {{start date|2023|10|27}} | ShortSummary = In the present, the ninja successfully neutralize their rivals while Shion tries to make up with their leader in the nurse's office. Back in July, the Russian man manages to fight off two ninja opponents and steal the [[kei car]] of an abusive father, sparing him at the last minute when the little girl at the apartments cries out. However, the Russian man is knocked out by an invisible Kuro, and then escorted to a meeting with more senior ninja. Sasama takes off his suit and reveals his true form to be that of a skinnier woman. The ninja send a couple assassins to rescue the Russian's daughter and kill his handler, informing him that they have recruited him into their foreign affairs division. | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 5 | Title = Kumogakure Is Within the Top 10 Common Family Names in Japan (Lying) | TranslitTitle = Kumogakure wa Nippon de Oi Myōji Rankingu Ichi Zero iinai（Uso） | NativeTitle = 雲隠は日本で多い名字ランキング１０位以内（嘘） | NativeTitleLangCode = ja | DirectedBy = Shintarō Matsui | WrittenBy = Keiichirō Ōchi | Aux2 = Igumikyia,<br/>Satoshi Kuwabara | OriginalAirDate = {{start date|2023|11|3}} | ShortSummary = Kuro takes the entrance exam to enter the high school for his mission, with Shion's sending him coded test answers using colored grains of rice stuck between the floorboards. However, his classmate Noguchi, who is there to take a make-up exam herself, notices the rice and alerts the teacher, forcing Kuro to take drastic measures to pass the test before his plan is ruined. Afterwards, Kuro invites Noguchi to his home to meet his "mother" Kawado, where they watch a bloody show from the Ninja Broadcast Company. The next day, Kuro heads to school with Eita and Noguchi. After a strange encounter with the school Director, Kuro helps Eita deal with some bullies. | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 6 | Title = The Lid on This Hellish Cauldron Has Come Off | TranslitTitle = Jigoku no Kama no Futa ga Ima Hiraitayo | NativeTitle = 地獄の釜の蓋がいま開いたよ | NativeTitleLangCode = ja | DirectedBy = 蟹久保朱眞 | WrittenBy = Keiichirō Ōchi | Aux2 = Satoshi Kuwabara | OriginalAirDate = {{start date|2023|11|10}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 7 | Title = Meow Meow, Meow Meow, Meow Meow Meow Meow Meow? | TranslitTitle = Onyanya, nyannya, nyanyanyanyannya? | NativeTitle = オニャニャ、ニャンニャ、ニャニャニャニャンニャ？ | NativeTitleLangCode = ja | DirectedBy = Yuri Uema | WrittenBy = Keiichirō Ōchi | Aux2 = Yuri Uema | OriginalAirDate = {{start date|2023|11|17}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 8 | Title = Every Last Ninja on the Surface Will Be Annihilated | TranslitTitle = Chijō no Shinobi domo wa, Subete Horobosu | NativeTitle = 地上の忍びどもは、すべて滅ぼす | NativeTitleLangCode = ja | DirectedBy = Kimiharu Mutou | WrittenBy = Keiichirō Ōchi | Aux2 = Arisa Konishi,<br/>Satoshi Kuwabara | OriginalAirDate = {{start date|2023|11|24}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 9 | Title = I'm Gonna Go Down in Shinobi History | TranslitTitle = Ore wa Shinobi no Rekishi ni Nokoruze | NativeTitle = 俺は忍びの歴史に残るぜ | NativeTitleLangCode = ja | DirectedBy = Satoru Yamashita | WrittenBy = Keiichirō Ōchi | Aux2 = Wataru Chihara,<br/>Satoshi Kuwabara | OriginalAirDate = {{start date|2023|12|1}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 10 | Title = A Maiden's Chest Is a Precious Thing | TranslitTitle = Otome no Mune wa Totemo Taisetsuna Mononano | NativeTitle = 乙女の胸はとても大切なものなの | NativeTitleLangCode = ja | DirectedBy = Fumio Maezono | WrittenBy = Keiichirō Ōchi | Aux2 = Igumikiya,<br/>Satoshi Kuwabara | OriginalAirDate = {{start date|2023|12|8}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 11 | Title = Kuro Finally Took Up a Sword | TranslitTitle = Tsuini, Kurō ga Katana o Nigitta | NativeTitle = ついに、九郎が刀を握った | NativeTitleLangCode = ja | DirectedBy = Mie Matsushima | WrittenBy = Keiichirō Ōchi | Aux2 = Igumikiya,<br/>Satoshi Kuwabara | OriginalAirDate = {{start date|2023|12|15}} | ShortSummary = | LineColor = 50C878 }} {{Episode list | EpisodeNumber = 12 | Title = Business as Usual, Wrapped Up Tidy | TranslitTitle = Itsumo Tōri Kushukushu Tone | NativeTitle = いつも通りクシュクシュとね | NativeTitleLangCode = ja | DirectedBy = Taiji Kanawashi | WrittenBy = Keiichirō Ōchi | Aux2 = Satoshi Kuwabara | OriginalAirDate = {{start date|2023|12|22}} | ShortSummary = | LineColor = 50C878 }} }}
===Live-action film=== In March 2024, it was announced that the series would receive a [[live-action]] film adaptation.<ref>{{cite web|last=Tai|first=Anita|title=Kengo Hanazawa's Under Ninja Manga Gets Live-Action Film|url=https://www.animenewsnetwork.com/news/2024-03-31/kengo-hanazawa-under-ninja-manga-gets-live-action-film/.209402|website=[[Anime News Network]]|access-date=March 31, 2024|archive-url=https://web.archive.org/web/20240331154409/https://www.animenewsnetwork.com/news/2024-03-31/kengo-hanazawa-under-ninja-manga-gets-live-action-film/.209402|archive-date=March 31, 2024|date=March 31, 2024|url-status=live}}</ref> The film adaptation is written and directed by Yūichi Fukuda, and stars [[Kento Yamazaki]] and [[Minami Hamabe]] as Kurō Kumogakure and Ayaka Noguchi respectively. The film premiered in Japanese theaters on January 24, 2025.<ref name="LA-cast">{{cite web|last=Loo|first=Egan|title=Live-Action Under Ninja Film's Teaser Unveils Cast, Director, January 24 Debut|url=https://www.animenewsnetwork.com/news/2024-08-28/live-action-under-ninja-film-teaser-unveils-cast-director-january-24-debut/.214889|website=[[Anime News Network]]|access-date=September 2, 2024|date=September 2, 2024|archive-url=https://web.archive.org/web/20240902154757/https://www.animenewsnetwork.com/news/2024-08-28/live-action-under-ninja-film-teaser-unveils-cast-director-january-24-debut/.214889|archive-date=September 2, 2024|url-status=live}}</ref> The film's theme song is "[[Doppelgänger (Creepy Nuts song)|Doppelgänger]]", performed by [[Creepy Nuts]].<ref>{{cite web|last=Mateo|first=Alex|title=Live-Action Under Ninja Film's Trailer Reveals Theme Song by Creepy Nuts|url=https://www.animenewsnetwork.com/news/2024-11-25/live-action-under-ninja-film-trailer-reveals-theme-song-by-creepy-nuts/.218295|website=[[Anime News Network]]|access-date=November 25, 2024|archive-url=https://web.archive.org/web/20241125204347/https://www.animenewsnetwork.com/news/2024-11-25/live-action-under-ninja-film-trailer-reveals-theme-song-by-creepy-nuts/.218295|archive-date=November 25, 2024|date=November 25, 2024|url-status=live}}</ref>
The film was scheduled to premiere in Los Angeles on January 8, 2025;<ref>{{cite web|last=Hazra|first=Adriana|title=Live-Action Under Ninja Film Premieres on January 8 in Los Angeles|url=https://www.animenewsnetwork.com/news/2025-01-04/live-action-under-ninja-film-premieres-on-january-8-in-los-angeles/.219719|website=[[Anime News Network]]|access-date=January 6, 2025|archive-url=https://web.archive.org/web/20250106045451/https://www.animenewsnetwork.com/news/2025-01-04/live-action-under-ninja-film-premieres-on-january-8-in-los-angeles/.219719|archive-date=January 6, 2025|date=January 4, 2025|url-status=live}}</ref> however, it was cancelled due to the [[January 2025 Southern California wildfires|wildfire state of emergency]].<ref>{{cite web|title=Kento Yamazaki's Under Ninja Premiere in Los Angeles Canceled Due to Wildfire State of Emergency|url=https://us.oricon-group.com/news/3059/|website=Japan Anime News|publisher=[[Oricon]]|access-date=January 12, 2025|archive-url=https://web.archive.org/web/20250109213737/https://us.oricon-group.com/news/3059/|archive-date=January 9, 2025|date=January 8, 2025|url-status=live}}</ref>
==Reception== The series was nominated for the 49th [[Kodansha Manga Award]] in the general category in 2025.<ref>{{cite web|last=Hodgkins|first=Crystalyn|title=49th Annual Kodansha Manga Awards' Nominees Announced|url=https://www.animenewsnetwork.com/news/2025-04-07/49th-annual-kodansha-manga-awards-nominees-announced/.223294|website=[[Anime News Network]]|access-date=April 7, 2025|date=April 7, 2025|archive-url=https://web.archive.org/web/20250407100653/https://www.animenewsnetwork.com/news/2025-04-07/49th-annual-kodansha-manga-awards-nominees-announced/.223294|archive-date=April 7, 2025|url-status=live}}</ref>
==Notes== {{notelist}}
==References== {{reflist}}
==External links== * {{Official website|https://magazine.yanmaga.jp/c/underninja|Official manga website at ''Young Magazine''}} {{in lang|ja}} * {{Official website|https://under-ninja.jp/|Official anime website}} {{in lang|ja}} * {{Anime News Network|manga|24702}}
{{Series in Weekly Young Magazine}} {{Weekly Young Magazine - 2010–2019}} {{Tezuka Productions}}
[[Category:Action anime and manga]] [[Category:Anime series based on manga]] [[Category:Comedy anime and manga]] [[Category:Crunchyroll anime]] [[Category:Kodansha manga]] [[Category:Live-action films based on manga]] [[Category:Manga adapted into films]] [[Category:Ninja in anime and manga]] [[Category:Seinen manga]] [[Category:TBS Television (Japan) original programming]] [[Category:Tezuka Productions]]