A high school clique is goaded into joining the cheerleading club by their overenthusiastic leader. While their older classmates make it all look so easy and graceful， Rie and her team keep falling over each other! Exhausted from countless practice sessions and frustrated with what seems to be the fruitlessness of it all， Rie starts wondering…is this worth passing up my valuable high school years over? A chance encounter one night gives her the answer she was searching for…

伯爵高校2年生、小檜山野咲。III号戦車Ｎ型の車長として初めての試合に臨む。対戦相手は強豪・サンダース大付属高校－－。戦いの場の緊張感を肌で感じるとき、野咲は“魔女先輩”のことを思い出す－－。

謎の光柱・ピラーと人類の戦争、そのギリシャ戦線。“戦争狂”の異名を取る戦車隊長・エーベルブルク大尉は、戦域の司令官・オストレイ大尉からある命令を受ける……。ワルキューレの為に戦い散る男たちの物語!!