Tsubaki, an outstanding member of the kendo club, is not only as skilled as the boys but also serves as an instructor. In secret, she harbors feelings for her fellow club member, Soma… One day, Tsubaki pleads for the club’s survival, which is at risk of being disbanded. The principal agrees to keep it running, but under one condition: for an entire month, she must allow him to do whatever he pleases with her body. For the sake of the club, she accepts his cruel proposal… Day after day, no matter the place, the hands of pleasure relentlessly assault her. Little by little, her body and mind begin to melt under the weight of lust…