Yui is a high school girl who travels back in time and finds herself in the Warring States period. While she is disappointed that she cannot meet the Young Lord Tadakiyo, she hears about a "footrace" between retainers. Yui appealed directly to the retired Nobushige of the Amano family. She participated in the footrace competition. In the end, she was unable to become a foot soldier and returned to Yoshino. Unable to give up, Yui meets Tadakiyo's older brother, Naruyuki. She was told about Tadakiyo's fiancee, Ako...