Avsnitt 1

Yui Hayakawa, 16 years old. She is a high school girl whose only strength is her running skills. One night, his younger brother, Takeru, builds a machine that sends her back in time to the Warring States period. Yui desperately joins the foot soldiers and passes herself off as "Yuinosuke". A handsome young warrior appears before her, and she falls in love with him at first sight. He is the legitimate heir of the Hagi family, Kuhachiro Tadakiyo . As it happens, Yui finds herself staying with Yoshino, a farmer. She goes to the castle with the sole intention of seeing Tadakiyo again.