Deep within the mansion, under an extreme regime of reward and punishment, two sisters work as maids. Mayura constantly fails in her duties, but Yume continues to help and encourage her. The two share a close, sisterly bond. One day, Yume is tasked with teaching Mayura how to properly groom her private area according to the master's preferences. During this process, the two touch each other's naked, beautiful bodies, captivated by their own purity. As they shave each other's pubic hair, a subtle curiosity toward each other's female bodies begins to emerge. Gradually, their relationship grows deeper.