Masami Nagasawa
The main voice cast members were officially unveiled on May 13, 2011. It was announced that actress Masami Nagasawa would voice Matsuzaki, the main character. This was Nagasawa's first voice acting role in a Studio Ghibli film. In addition, Jun'ichi Okada, a member of the Japanese band V6, would be voicing Shun Kazama, a member of the school newspaper publishing team. Additionally, Jun Fubuki, Keiko Takeshita, Takashi Naitō, Teruyuki Kagawa, Yuriko Ishida, Nao Ōmori and Shunsuke Kazama would voice other minor characters.