Marriage Is Difficult for a Ninja (2023)

A Japanese drama-comedy about two married ninjas from rival clans who have absolutely no idea their spouse is hiding the very same secret.

Marriage Is Difficult for a Ninja - Series Information

  • Original Title: 忍者に結婚は難しい
  • First Air Year: 2023
  • Last Air Year: 2023
  • Type: TV Series
  • Genres: Drama, Action, Adventure, Comedy
  • Episode Runtime: Average runtime per episode (54 minutes)
  • Number of Seasons: 1
  • Number of Episodes: 11
  • Status: Ended
  • Original Language: Japanese
  • Spoken Languages: Japanese
  • First Air Date: February 14, 2023 (South Korea - 15)
  • Networks: Fuji TV
  • Alternative Titles: 忍者結婚很難 (CN), Ninja ni Kekkon wa Muzukashii (JP)
  • Production Companies: Fuji Television Network
  • Production Countries: Japan

Marriage Is Difficult for a Ninja - Plot

Hotaru Kusakari is married to Gorō Kusakari, and she works as a pharmacist. She holds a secret that she is really a ninja and part of the Kōka ninja clan. Her husband holds a routine job as a postal delivery man, but he has a secret as well. He is also a ninja and part of the Iga ninja clan. Even though Hotaru and Gorō are a married couple, they are each unaware that their partner is a ninja.

Marriage Is Difficult for a Ninja - Trailer

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Marriage Is Difficult for a Ninja - Cast & Crew

Main Cast

  • Nanao
  • Nobuyuki Suzuki
  • Ryo Katsuji
  • Maika Yamamoto
  • Ayako Yoshitani
  • Taiyu Fujiwara
  • Miwako Kakei
  • Rie Tomosaka
  • Arata Furuta
  • Masachika Ichimura

Writers

  • Yuko Matsuda

Marriage Is Difficult for a Ninja - FAQs

What is Marriage Is Difficult for a Ninja about?

The series follows Hotaru and Goro Kusakari, a married couple with a remarkable shared secret — both are ninjas from rival clans. Hotaru belongs to the Kōka clan and works as a pharmacist, while Goro is an Iga ninja posing as a postal delivery man. Neither knows the other's true identity.

Do Hotaru and Goro ever discover each other's ninja identity?

That question sits at the heart of the entire series. The show cleverly sustains the dramatic irony across its 11 episodes, letting tension and comedy build as both spouses come dangerously close to uncovering the truth — all while carrying out secret missions that could put their marriage, and their lives, at risk.

Where can you watch Marriage Is Difficult for a Ninja?

Streaming availability varies by region. You can check the latest viewing options — including any streaming, rental, or purchase platforms available in your area — on JustWatch, which tracks real-time availability across services worldwide.

Is Marriage Is Difficult for a Ninja based on a manga or book?

Marriage Is Difficult for a Ninja is adapted from a Japanese manga series of the same name. The source material blends romantic comedy with ninja action, and the TV adaptation faithfully carries over that mix of domestic charm and covert-ops tension that made the manga popular with readers.

Who are the lead actors in Marriage Is Difficult for a Ninja?

The series stars Nanao as Hotaru Kusakari, the Kōka clan ninja working undercover as a pharmacist, and Nobuyuki Suzuki as her husband Goro, an Iga clan ninja disguised as a postal worker. The supporting cast includes Ryo Katsuji, Maika Yamamoto, and Arata Furuta, among others.

How many episodes does Marriage Is Difficult for a Ninja have?

The series ran for 11 episodes across its single season, which aired on Fuji TV in Japan beginning in February 2023. Each episode runs approximately 54 minutes, giving the show a satisfying dramatic pace that balances its comedic and action-driven storylines without overstaying its welcome.

What makes Marriage Is Difficult for a Ninja worth watching?

It's a genuinely fun blend of genres — part romantic comedy, part ninja thriller, part domestic drama. The central premise of two rival-clan ninjas unknowingly married to each other is endlessly entertaining, and the show executes it with wit and style. Fans of SPY x FAMILY or House of Ninjas will feel right at home.

What are similar shows to Marriage Is Difficult for a Ninja?

If you enjoy the hidden-identity romance angle, SPY x FAMILY and Spy Classroom offer a similar thrill. For ninja-focused action, House of Ninjas and Mission: Yozakura Family are excellent picks. Basilisk and UNDER NINJA round out the list for viewers who want a darker, more action-heavy ninja experience.

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