A young Minato Narumiya is brought by his mother who used to play kyūdō in the past to a kyūdō hall, where he witnesses Masaki Takigawa's grandfather Akihiro Yasaka's kyūdō and hears the sound of the bowstring hitting the bow after the arrow was released. Minato's mother explains to him about that sound called "tsurune". Since then, Minato desires to learn kyūdō..