Mizuki, who was in charge of an interview between floral art masters Yumero and Kazue, threatens Yuriko and takes her virginity. Yumero, who deeply loves her younger sister, becomes furious at this act and takes action to protest—but Mizuki has already plotted to seize control of the Shimohara school, secretly conspiring with Kazue. Soon, the sisters are captured. Yumero, possessing unbreakable pride and resolve, braces herself to endure severe torment. Thus begins their days of captivity and intense training—