泥門高校1年・小早川瀬那。気弱な性格が災いし、幼き頃よりパシリ人生を送ってきた。だがそのおかげで(?)ズバ抜けた俊足を持つ瀬那は、悪魔のごとき男・ヒル魔によりアメフト部へと引きずり込まれるが!?
Sena Kobayakawa is a first year student at Deimon High School. Due to her timid personality, she has led a lazy life since childhood. However, thanks to this (?) Sena, who has exceptionally fast feet, is dragged into the American football club by a man who looks like a devil, a leech demon!?