Located in a small town in the Kanto region, a certain company was known as a typical family-run business. The president was the father, the employees were his sons, and the director was his stepmother, with the family working together in unison on daily operations. However, the eldest son kept making repeated mistakes at work, facing constant scolding from his father and becoming mentally overwhelmed. The one who supported him through this difficult time was his stepmother, whose warm yet seductive demeanor drew him in. Their bond gradually gave rise to forbidden emotions within the workplace, ultimately leading to the shocking development of an incestuous office affair.