The Japanese drama Otto wo Koroshita Hazu Nanoni (English title: I Was Supposed to Have Killed My Husband) started its broadcast on July 6, 2026. The series is a thriller mystery with time loop elements. It tells the story of a woman who discovers her husband’s affair and stabs him, only to find herself trapped in a time loop reliving that same day.
The drama comes from the vertical-scroll manga by Akashi Mana. It has gained attention for its intense revenge storyline and supernatural twist. Here is everything you need to know about the series, including release details, streaming platforms, cast information, and the complete plot.
Otto wo Koroshita Hazu Nanoni Release Date and Broadcast Schedule
Otto wo Koroshita Hazu Nanoni premiered on July 6, 2026. The series airs every Monday at 11:06 p.m. JST. The show has a total of 10 episodes. Each episode runs for approximately 45 to 49 minutes.
The drama broadcasts on multiple television networks across Japan:
- TV Tokyo
- TV Aichi
- TV Osaka
- TV Setouchi
- TV Hokkaido
- TVQ Kyushu Broadcasting
Where to Stream Otto wo Koroshita Hazu Nanoni
Otto wo Koroshita Hazu Nanoni is available on several streaming platforms in Japan. Viewers can watch the series on:
- Lemino
- TVer
- U-Next
The series is also available through the official TV Tokyo website.
For international audiences, the show is not available on major global streaming platforms like Netflix, Disney+, Prime Video, or Apple TV+. It is also not available on Crunchyroll, Max, or Paramount+. International viewers may need to use a VPN or wait for potential licensing deals with global streaming services in the future.
The Story and Plot of Otto wo Koroshita Hazu Nanoni
Otto wo Koroshita Hazu Nanoni is based on the vertical-scroll manga by Akashi Mana. The story follows Rino Honjo, a talented cook who appears to have a happy marriage with her kind-hearted husband, Keita Honjo.
On the night of their wedding anniversary, Rino receives a mysterious link on her phone. When she opens it, she sees a livestream video of Keita having an affair with another woman. Rino storms to the secret meeting place. In a fit of rage, she stabs Keita repeatedly.
But Rino is overpowered and killed by Keita’s mistress, Elena. When Rino opens her eyes again, she finds herself back on the very day she discovered her husband’s infidelity. She is trapped in a time loop, forced to relive the same day over and over.
Each repetition pushes Rino to confront buried secrets and experiment with different choices, from revenge to reconciliation. She must race against fate to uncover the single change that will let her break free from the loop.
The series blends thriller, mystery, fantasy, and drama elements. It explores themes of betrayal, revenge, time loops, and investigation.
Main Cast of Otto wo Koroshita Hazu Nanoni
The series features a talented cast of Japanese actors:
- Rio Uchida as Rino Honjo (the protagonist)
- Keisuke Watanabe as Keita Honjo (Rino’s husband)
- Yumena Yanai
- Ryousuke Sota
- Ryota Kobayashi
- Akari Nibu
- Mahiru Konno
- Yorie Yamashita
Rio Uchida is a well-known Japanese actress who has appeared in various dramas and films. Keisuke Watanabe is also a popular actor known for his roles in recent Japanese productions.
Production Team and Music
The drama is directed by a team of experienced directors:
- Ken Iizuka
- Takayoshi Tanazawa
- Masayuki Matoba
The music is composed by Shogo Kaida.
The opening theme song is “morning star” performed by the bercedes menz. The ending theme song is “Hanasenai” performed by Nowlu.
About the Original Manga
Otto wo Koroshita Hazu Nanoni is adapted from a digital vertical-scroll manga by Akashi Mana (also written as Mana Akaishi). The manga was originally serialized on digital platforms and gained popularity for its gripping revenge story and time loop concept.
The manga’s premise involves Rino discovering her husband’s affair through a livestream video and stabbing him, only to be killed by his mistress and sent back in time to repeat the day. The manga has been available on LINE Manga and other digital platforms.
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Genre and Themes
Otto wo Koroshita Hazu Nanoni falls into several genres:
- Thriller
- Mystery
- Drama
- Fantasy (due to the time loop element)
The series carries tags including:
- Adapted from a web manga
- Married female lead
- Married male lead
- Extramarital affair
- Time loop
- Infidelity
- Revenge
- Investigation
- Suspense
The show is rated for mature audiences due to its themes of infidelity, violence, and revenge. The content rating is not yet rated, but viewers should expect intense scenes.
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