A Ninja and an Assassin Under One Roof (2025)

A 2025 anime comedy series where a runaway ninja and a high school assassin become the most unlikely of roommates.

A Ninja and an Assassin Under One Roof - Series Information

  • Original Title: 忍者と殺し屋のふたりぐらし
  • First Air Year: 2025
  • Last Air Year: 2025
  • Type: TV Series
  • Genres: Animation, Comedy
  • Content Rating (US): TV-14
  • Episode Runtime: Average runtime per episode (24 minutes)
  • Number of Seasons: 1
  • Number of Episodes: 12
  • Status: Ended
  • Original Language: Japanese
  • Spoken Languages: Japanese
  • First Air Date: April 10, 2025 (United States - TV-14), April 10, 2025 (France - 12), April 10, 2025 (India - U/A 16+), April 10, 2025 (Australia - PG), April 10, 2025 (Brazil - 14), April 10, 2025 (South Korea - 15)
  • Networks: AT-X
  • Production Companies: SHAFT, KADOKAWA, Pony Canyon, Kansai Television, BS11, movic, AT-X
  • Production Countries: Japan
  • Alternative Titles: にんころ (JP), Спільне життя ніндзя та кілерки (UA), A Ninja and Assassin Living Together (US), 忍者与杀手二人组的日常生活 (CN)

A Ninja and an Assassin Under One Roof - Plot

On the way home from school one day, Konoha Koga rescues Satoko Kusagakure, a ninja who escaped her village. Soon, pursuers from the village show up in search of Satoko only to be deftly dealt with by Konoha. As it turns out, the unassuming high schooler is actually an assassin. Thus, the potentially cutthroat cohabitation of a ninja and an assassin begins!

A Ninja and an Assassin Under One Roof - Trailer

Watch the official trailer and see the chaos of ninja-assassin cohabitation unfold:

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A Ninja and an Assassin Under One Roof - Cast & Crew

Main Cast

  • Haruna Mikawa
  • Kana Hanazawa
  • Yu Serizawa
  • Eri Kitamura
  • Rumi Okubo
  • Mao Ichimichi
  • Kyoka Moriya
  • Mai Narumi
  • Yui Ogura

Executive Producers

  • Keisuke Sano
  • Sho Tanaka
  • Nobuyuki Takeuchi
  • Ryu Takahashi
  • Sadakazu Kikuchi

A Ninja and an Assassin Under One Roof - FAQs

Is A Ninja and an Assassin Under One Roof based on a manga?

Yes, the series is adapted from a manga of the same name. The source material follows the comedic cohabitation of a runaway kunoichi and a teenage assassin, blending action and slice-of-life humor in a style that fans of the manga will find faithfully brought to life in the anime adaptation.

What is A Ninja and an Assassin Under One Roof about?

The show follows Konoha Koga, a seemingly ordinary high schooler who is secretly a skilled assassin, and Satoko Kusagakure, a ninja who fled her village. After Konoha rescues Satoko from her pursuers, the two end up living together, kicking off a chaotic and comedic cohabitation full of action and charm.

Where can you stream A Ninja and an Assassin Under One Roof?

The series is available to stream on Crunchyroll, including through the Crunchyroll Amazon Channel. Both options offer flat-rate subscription access, making it easy to binge all 12 episodes of this anime comedy without any additional purchase required.

Who voices the main characters in the series?

Kana Hanazawa voices Konoha Koga, the deceptively dangerous high school assassin, while Haruna Mikawa brings the runaway ninja Satoko Kusagakure to life. The supporting cast includes Yu Serizawa, Eri Kitamura, Rumi Okubo, and Mao Ichimichi, all lending their talents to this lively ensemble.

How many episodes does A Ninja and an Assassin Under One Roof have?

The series ran for a single season of 12 episodes, each approximately 24 minutes long. It premiered on April 10, 2025, and concluded its run the same year, offering a compact but complete story for viewers who enjoy binge-friendly anime comedies.

Which studio animated A Ninja and an Assassin Under One Roof?

The series was produced by SHAFT, the acclaimed Japanese animation studio known for its distinctive visual style and work on titles like the Monogatari series and Madoka Magica. SHAFT's signature aesthetic brings a stylish energy to the show's action sequences and comedic moments alike.

What anime are similar to A Ninja and an Assassin Under One Roof?

Fans of the show might enjoy Ninja Kamui, Hell's Paradise, or UNDER NINJA for their ninja and assassin themes. For a lighter comedic tone, Ninja Nonsense and NARUTO Spin-Off: Rock Lee & His Ninja Pals offer fun alternatives. Shinobi no Ittoki is also worth checking out for its modern ninja premise.

Is A Ninja and an Assassin Under One Roof worth watching?

For fans of anime comedies with action flair, it's a delightful watch. The odd-couple dynamic between a stoic assassin and an earnest ninja creates plenty of comedic friction, and SHAFT's polished animation keeps things visually engaging. At just 12 episodes, it's an easy, entertaining commitment from start to finish.

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