Character Arc
Kakeru Kurahara is an exceptionally talented long-distance runner who arrives at university carrying the weight of a troubled past. After clashing with his high school coach and teammates, he has grown cynical about the value of teamwork, believing that only raw speed and individual results truly matter. When Haiji Kiyose catches him shoplifting and offers him a room at Chikusei-so, Kakeru reluctantly becomes entangled in the dormitory's ambitions.
Throughout the series, Kakeru's prodigious ability becomes both a gift and a source of friction. His perfectionism and impatience with slower teammates often isolate him, and he struggles to understand why Haiji insists that being 'strong' matters more than being 'fast.' His arc centers on learning to channel his talent in service of others rather than as a measure of personal superiority.
By the time the team reaches the Hakone Ekiden, Kakeru has undergone a profound emotional shift. He comes to value the camaraderie of his housemates, reconciles with the meaning of running, and discovers a deeper joy in the sport. His growth from a guarded loner into a runner who races for his team forms the emotional backbone of the entire story.