Is the Under Ninja Anime Finished?#
If you are wondering whether you can jump into Under Ninja and get a complete story, the answer is complex. While the anime adaptation premiered on October 5, 2023, the original source material—the manga—is an ongoing series that began serialization in Weekly Young Magazine back in July 2018.
Recent news from 2025 indicates that the manga is still active, having been nominated for the 49th Annual Kodansha Manga Awards and taking periodic breaks. Because the manga is still continuing, viewers who watch only the anime will likely find themselves needing to move to the written source material to see the full conclusion of the story.
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What is Under Ninja About?#
Under Ninja blends traditional ninja tropes with a modern, gritty setting. The story follows Kurō, a high school loner who holds a secret part-time job: he is a modern-day ninja.
In this world, the Allied Command in Japan developed an agency after World War II to manage terrorism and violence in the Pacific region. This agency has grown into a massive organization managing 20,000 ninja who handle both domestic and international affairs. Kurō finds himself as a critical line of defense in Tokyo against a surge of foreign assassins.
Who is this for? This series is perfect for fans of espionage, secret societies, and unconventional takes on the ninja genre. If you enjoy stories about hidden worlds operating right under the nose of the general public, you should watch the anime on Prime Video.
Recommended Watch and Read Order#
Depending on how much of the story you want to consume and how you prefer to experience it, here are the best paths forward. For a full breakdown of how the works connect, please refer to the relationship tree below the article.
The Release Order#
For those who want to experience the franchise as the general public did:
- Under Ninja Anime (2023): Start here to get an animated introduction to Kurō and the agency.
The Completionist Order#
If you want every detail and the most complete version of the story:
- Under Ninja Manga (2018): Start with the original serialization to experience the plot as it was first written.
- Under Ninja Anime (2023): Watch the adaptation to see the characters brought to life.
- Under Ninja Live-Action Film (2024): Expand your experience with the live-action adaptation.
The “Source Material” Path#
For viewers who enjoy the anime but want more answers:
- Under Ninja Anime: Watch the series first.
- Under Ninja Manga: Pick up the manga to continue the story beyond where the anime leaves off. You can buy the Under Ninja manga here.
Extra Information#
Beyond the anime and manga, Under Ninja has expanded into other media. A live-action film was announced in early 2024 and debuted on January 24, adding another layer to the franchise’s presence.
Whether you are following the story through the manga, the anime, or the film, you can find various Under Ninja merchandise here to show your support for the series.
Under Ninja • manga • 2018-07-23 (serialized in Weekly Young Magazine)
└─(adaptation)→ Under Ninja • anime • 2023-10-05
