After losing her husband, Yuuhi finds herself living with her daughter and son-in-law, embraced by their kindness and warmth. As her heart slowly heals within this loving household, her unconscious sensuality begins to stir forbidden desires in her daughter's husband. Though he resists, he cannot deny the growing attraction he feels toward her. Becoming aware that she still holds feminine allure, Yuuhi is drawn into a whirlpool of new, taboo emotions. A story of forbidden passion, temptation, and the fragile boundaries of family—The Beautiful Mother-in-Law in My Home.