Takeuchi who used to be a soccer player, said that he felt as if it was fated for him to be playing Mogi in this drama. As he was one of the many sportsmen who had to retire due to injuries, he can identify with the feelings which Mogi has and thinks that he can tap on his experience to play this character. In order to train his body to look like a real running athlete, Takeuchi is going through a strict diet which also involves eliminating sugar from his drinks and abstaining from alcohol.
Other co-stars in this drama include Terao Akira who plays Iiyama Haruyuki who was the president of now-bankrupt Iiyama Sangyo which made silk lei that is an essential material in the Rikuou running shoes and Otoo Takuma who plays Kido Akihiro, the coach of Daiwa Foods' athletics team which Mogi belongs to. Shiga Kotaro plays Tomishima Genzou, the head clerk for Kobaseya while Mitsuishi Ken who plays Arimura Tooru who is a sports equipment shop owner and offers lots of useful advice to Miyazawa. Last but not least, Kimura Midoriko plays Motoko who is the wife of Iiyama and supports him during good and bad times.