26 Years Diary (Japanese: あなたを忘れない Anata wo Wasurenai; Korean: 너를 잊지 않을거야 Neoreul Ijji Anheulgeoya; literally "I Won't Forget You") is a biopic that tells the story of Lee Su-hyon's life and death.

The film details the 26-year-old Korean student's experiences in Japan, including going to school and his developing romance with a Japanese student (played by Mākii). He died on January 21, 2001, along with a Japanese photographer, Shiro Sekine, while both were trying to save the life of a man who had fallen onto the tracks at the Shin-Ōkubo Station in Tokyo. The soundtrack of the movie is the song "Okizarisu" by High and Mighty Color.