Ourin Academy's peaceful routine ends abruptly when Kusunoki-sensei stages a coup and seizes the school, backed by most of the student body. The principal is defeated, and order gives way to chaos. Yuu Sakurano, Yuzuki Kaede and Nagomi Fujikura set out to win the school back from her and restore the calm days they knew. What follows is an all-out war unlike anything the academy has seen before. The original video animation is tied to the bishoujo game Haru no Ashioto by Minori and was packaged with a special edition of that game, mixing action with comedy.