Our Secret Diary
Nozomi Kuroda is in the 2nd grade of high school. One day, she finds a letter in a classroom desk. The letter has only the word "like" written on it. The person who wrote the letter is Jun Setoyama. He happens to be the most popular boy at the high school. Nozomi Kuroda feels embarrassed, but she eventually leaves a reply in a shoe closet at school. This is how their secret exchange diary begins. Nozomi Kuroda soon learns that the intended recipient for the first letter was her best friend. Nevertheless, Nozomi Kuroda is attracted to Jun Setoyama, who expresses his thoughts and feelings unlike her. She's unable to tell him the truth that the person exchanging messages is her and not her best friend.
Where to watch Our Secret Diary in United States
Can I watch Our Secret Diary in United States? Our Secret Diary isn't currently available to stream in United States. Availability changes often — add it to your watchlist and check back.
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Click a service to open Our Secret Diary there. Availability last verified on September 10, 2026.
Where is Our Secret Diary streaming around the world?
| Country | Streaming on | Rent / Buy |
|---|---|---|
| Japan | Amazon Prime Video, U-NEXT, Amazon Prime Video with Ads | Amazon Video, Apple TV Store, FOD |
| South Korea | Netflix, Netflix Standard with Ads | wavve, Google Play Movies |
About Our Secret Diary
Our Secret Diary is a 2023 Japanese-language romance film directed by Kentarō Takemura. The cast is led by Fumiya Takahashi, Hiyori Sakurada, Mizuki Kayashima. It has a runtime of 1h 51m.
Our Secret Diary was produced by Shochiku, TBS, and Shochiku Studio and made in Japan. It was released on July 7, 2023.
- Director
- Kentarō Takemura
- Writers
- Nami Kikkawa
- Release date
- July 7, 2023
- Original language
- Japanese
- Status
- Released
- Country
- Japan
- Production
- Shochiku, TBS, Shochiku Studio
Our Secret Diary cast & crew
Our Secret Diary was directed by Kentarō Takemura and written by Nami Kikkawa.
The cast features Fumiya Takahashi as Jun Setoyama, Hiyori Sakurada as Nozomi Kuroda, Mizuki Kayashima as Erino Matsumoto, Ryosuke Sota as Haruto Yoneda, Nagisa Saito as Yuko Hayashi, and Mizuki Itagaki as Hiroto Yano.
Behind the camera, the score was composed by Koji Endo, cinematography is by Yoko Itakura, and it was produced by Shigeaki Yoshida and Shinya Watanabe.
Is Our Secret Diary worth watching?
At 1h 51m, it's a standard feature-length watch.
If you enjoy romance, Our Secret Diary is worth a place on your watchlist.
How and where to watch Our Secret Diary
Our Secret Diary isn't currently available on major streaming services in United States. We track availability continuously — add it to your watchlist and we'll keep an eye out.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of Our Secret Diary
Fumiya Takahashi
Jun Setoyama
Hiyori Sakurada
Nozomi Kuroda
Mizuki Kayashima
Erino Matsumoto
Ryosuke Sota
Haruto Yoneda
Nagisa Saito
Yuko Hayashi
Mizuki Itagaki
Hiroto Yano
Maru Kiuchi
Saya
Coco Masui
Moe
Futa Kimura
Ishii
Yuuka
Miku Setoyama
Hiroto Takahashi
Sho Suzuki
Riku Ichikawa
Jun's Classmate
Our Secret Diary — FAQs
▸Where can I watch Our Secret Diary in United States?
Our Secret Diary is not currently available on major streaming services in United States. Availability changes often — check back soon.
▸What language is Our Secret Diary in?
Our Secret Diary is originally in Japanese. Subtitle and dub options vary by streaming service.
▸How long is Our Secret Diary?
Our Secret Diary runs 1 hours 51 minutes (111 minutes).
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