The wife, who had to leave the house on a trip, asked her mother to take care of her husband, and her mother-in-law, Erica, came to the house. However, I couldn't welcome him obediently. For Aru, Erica, who has a bewitching charm, was not just a mother-in-law, but a woman. Until now, Ataru desperately suppressed and hid her lust for Erica. Under one roof with such a mother-in-law. Moreover, it is a perfect situation without my wife's eyes. At last, the patience of hitting reaches the limit ...