Lost parents early, and the Sisters without the relative was taken over as an adopted child by a certain painter. Elderly Sister, the Tsubomi which found work by offices of father, Younger Sister, the Shizuku which go to school. However, this Home was not peaceful. Father who plays with Shizuku for distorted love. The Younger Sister which one endures when I will not trouble it in Elderly Sister. And the Elderly Sister which has watched an unladylike figure of the Younger Sister at last risks its life, and protect Younger Sister!