The erotic body of KANBi exclusive actress 'Rumi Orizasa' blossoms... Rumi, who lives with her son as a high school student, made a living by working part-time at a supermarket, but for the future of her son, she also registered at a health store aiming for a high income. One day, her son's homeroom teacher, who happened to pass by the store, found out the truth and, to silence him, they had a physical relationship. The homeroom teacher, having tasted it, recommended Rumi's son to go to school and proposed a transfer to a soapland to Rumi, who was troubled by household finances. The stimulation in this new world, which she had never experienced in health care, freed Rumi from the guilt she felt towards her son and engraved the joy of a woman beyond 'work'...