Takao Osawa ... Sakutaro Matsumoto
Kou Shibasaki ... Ritsuko Fujimura
Masami Nagasawa ... Aki Hirose
Mirai Moriyama ... Sakutaro Matsumoto (high school)
Tsutomu Yamazaki ... Shigezo
Kankuro Kudo ... Ryunosuke Oki
Kanji Tsuda ... Johnny
Issei Takahashi ... Ryunosuke Oki (high school)
Rio Kanno ... Ritsuko Fujimura (young)
Tetta Sugimoto ... Aki's father
Katsutaka Furuhata ... Johnny (high school)
Kazusa Matsuda ... Yuko Nakagawa
Kenta Uchino ... Classmate
Aki Nishihara ... Classmate
Masaru Miyazaki ... Classmate
Yoshimasa Kondo ... Ninagawa-sensei
Magy ... Camera shop employee
Shinpe Ichikawa ... Photo studio customer
Nao Omori ... Airport official
Dandy Sakano ... English teacher
Yuki Amami ... Sakutaro's boss
Midori Kiuchi ... Sakutaro's mother
Yoshimitsu Morita ... Movie director
Misato Tanaka ... Ritsuko's mother