Director: Kentarō Takemura
A single word left in a school desk sparks a secret exchange of letters between two classmates in this Japanese teen romance.
What is Our Secret Diary about?
High school sophomore Nozomi Kuroda stumbles onto a folded note tucked inside a classroom desk, carrying nothing but the word "like." The note turns out to be from Jun Setoyama, the most popular boy at school, and though Nozomi is flustered, she can't resist slipping a reply into a shoe locker, starting a diary the two pass back and forth in secret. What Nozomi doesn't expect is learning that Jun's letter was actually meant for her best friend, not her. She keeps writing anyway, drawn in by how openly Jun shares his thoughts on the page, even as she hides the fact that she, not her friend, is the one answering him. As the diary deepens into something closer to a real connection, Nozomi has to decide how long she can keep the truth from both Jun and the friend she's unintentionally deceiving.
Cast & crew
Fumiya Takahashi and Hiyori Sakurada lead as Jun Setoyama and Nozomi Kuroda, carrying much of the film through voiceover narration drawn from the diary entries themselves. Mizuki Kayashima, Ryosuke Sota, Nagisa Saito, and Mizuki Itagaki round out the school-set supporting cast. Director Kentarō Takemura leans on close, handwritten inserts of the diary pages to keep the exchange feeling private and unhurried.
Context & significance
Our Secret Diary belongs to a long-running strand of Japanese teen romance built around handwritten notes and letters rather than texts or messaging apps, a choice that gives the central misunderstanding room to breathe. Released in 2023, the film draws on a well-worn shoujo-manga structure, the mistaken-recipient love triangle, while keeping its scale small and school-bound. That modesty, focused tightly on two teenagers and a notebook passed between lockers, is part of what has made this kind of story a durable genre in Japanese cinema.
Where & how to watch
Our Secret Diary streams on K-Time with Persian dubbing and Persian subtitles, so its dialogue-heavy, letter-reading scenes come through clearly for Farsi-speaking viewers. This page is free to browse; watching the film itself only requires a quick, free K-Time account login. K-Time's Farsi-first interface, from subtitle style to menu navigation, is built with the Iranian diaspora in mind.