Kamishiraishi will be playing Miyazawa's daughter Akane who she described as someone who is innocent and always thinks of her family's interests even though she may not show it consciously. As for Wada, he will be playing Hirase Takao who is the teammate of Mogi Hiroto (Takeuchi Ryoma) in the professional running team of Daiwa Shokuhin and a veteran runner conscious of his limits due to his injury while Sano will be playing Kezuka Naoyuki, an elite runner who belongs to the rival team of Asia Kogyo. Wada had experience being a runner of a professional team so he was surprised about being able to play a runner as an actor in this drama. Coincidentally, Hirase has a similar destiny as him since they both went through days of glory and face setbacks and troubles so he hopes to show how Hirase goes all out to live to the fullest. As for Sano, he revealed that he had gone through running training before the audition for this drama as he wanted very much to take part in this drama. Since this will be his second appearance in a drama based on an Ikeido novel (the first being "Shitamachi Rocket"), Sano feels that the experience this time will change something for him and he hopes to give his all to this drama.
Sources: Cinema Cafe / Eiga.com