From the author of Gokusen and Koudaike no Hitobito comes the story of Yui Hayakawa: an ordinary, uninspired high school girl who's only good at one thing - running! But because of her genius younger brother Takeru and his latest experiment, a time machine, she accidentally gets sent back to the Sengoku Era missing her beloved dinner steak! Will young Yui finally find that 'something' where her entire potential was…