On the night their daughter left home to enter college, the Fujimuras tried to have sex for the first time in a long time. Yuko stuffed Takuro's shaft into her mouth and began to suck it carefully. Takuro was excited. His rod should have been erect like a snake with its head raised, but... 'Huh? What's wrong? ...It's not erect.' Suddenly, the couple faces an unexpected crisis in their married life. Takuro, who is tormented by despair, finds a ray of hope in an article in a weekly magazine... "Why don't we try exchanging partners?" The latest installment in the couple swapping series is here!