After marriage, Satoru moved into his wife's family home as an adopted son-in-law, constantly struggling with the pressures of family dynamics. His father-in-law aggressively demanded grandchildren, placing immense pressure on Satoru to deliver. However, what truly unsettled him was his growing attraction toward his mother-in-law, Yuki—more than toward his own wife. Noticing his distress, Yuki grew concerned and secretly handed him a libido-enhancing drug. Upon taking it, Satoru became overwhelmed with desire and made advances toward her, but Yuki strongly resisted. The intense clash of emotions and desires leads to a gripping, tension-filled story packed with forbidden passion and family secrets.