The story focuses on Kenichi Shirahama (Shirahama Kenichi), an average 15-year-old weakling, whose life is upended with the appearance of the naive, beautiful, and strong transfer student, Miu F¨±rinji. After Kenichi witnesses Miu's skills in martial arts, he joins the Ry¨zanpaku dojo, a gathering place of those who are truly strong, which coincidentally also happens to be Miu's home.