The wife, a burden, and her sister were used to induce intense orgasms with aphrodisiacs and become sex slaves for three days. (Winter Aikoto, Hoshino Airi, MIAA-331)

The story revolves around two sisters, Ayari and Kotone, who live a poor life with their ailing mother. Their mother marries a wealthy man and lives happily with her stepfather. However, when their mother is hospitalized, their stepfather's attitude suddenly changes...