Trái Tim Giản Đơn
Himitsu is a 1999 Japanese fantasy romance film directed by Yōjirō Takita, starring Ryōko Hirosue, Kaoru Kobayashi and Kayoko Kishimoto and based on the novel Naoko by Keigo Higashino. It was released on 25 September 1999. An English-language French remake, The Secret, was released in 2007.