Your Letter (2025): cast, story & where to watch

Released in 2025, Your Letter is an animation, drama, mystery and adventure film directed by Kim Yong-hwan, running about 96 minutes.

What it’s about. After summer vacation, So-ri transfers to a new school and finds an anonymous letter in her desk drawer with an introduction to the school and a clue to finding the next letter. "If you want to keep reading, find my second letter!" While following the clues in the letters and searching all over the school like on a treasure hunt, So-ri keeps running into a same-aged student named Dong-soon. So-ri and Dong-soon quickly become friends as they search for the letters together. As she finds one letter after another, the special connection continues, and So-ri's curiosity grows for the mysterious sender. "I want to find the last letter and thank you in person."

Who’s in it. Your Letter stars Lee Soo-hyun as Lee So-ri (voice), Kim Min-ju as Park Dong-soon (voice), Min Seung-woo as Jung Ho-yeon (voice) and Nam Doh-hyeong as Ahn Seung-kyu (voice), among others.

How it landed. With an audience score of 7.6/10, Your Letter has been warmly received by audiences.

Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch Your Letter page.

If you liked it. Fans of Your Letter tend to enjoy Spirited Away, Your Name., Grave of the Fireflies and Spider-Man: Into the Spider-Verse.