At first, Kikuzato, the protagonist of the story, is a rather withdrawn teenage boy. He is indifferent to his surroundings and disinterested in making friends. But not for long! The unrelenting outreach of his cheerful and talkative classmate pulls him out of his shell. And the (at times) somewhat forceful and manipulative, though always well-intentioned, persuasion of his prosthetist set him on a new path in his athletic career.