"Hey, Yuki, are you free right now?
Well, then... could you save me...?"
Yuki was the hope and shining star of her school's track and field club... until an injury prevented her from qualifying for the national competition.
Depressed, she went to Shibuya to clear her head and happened to run into her best friend Mako, whom she had been friends with since middle school.
Unexpectedly, Mako asks Yuki to help her repay a debt to her master...?