Sano plays the lead character Kaito who used to be a marathon runner aiming for the Olympics but suffered a serious injury and becomes an employee at the city office instead. In a parallel world, Kaito manages to take part in the Olympics and is still dating his former girlfriend Marino who left him in the original world. As he shuttles between both worlds, Kaito realises what he needs to do in order to continue living.
Sano commented that as he had the experience of giving up on his dream as a professional soccer player due to an injury, he could empathise with the lead's desire to escape into another world where everything would work out well. While reading the script, he was reminded of the importance to accept the current circumstances despite how difficult it may be. Coincidentally, Sano recently played a professional runner in the TBS Autumn 2017 drama "Rikuou" and commented that he was amused that he got another runner's role this time. As such, he would have to maintain his stamina and physical fitness in preparation for the filming. As for Sagara, she revealed that she had visited Ehime before for the shooting of her first photobook so it definitely felt different to be back for the filming of a movie.
Filming will be done entirely in Ehime and begin in mid February.
Sources: Nikkansports / Yomiuri Hochi / Natalie