BBAN-428 Meeting my old best friend again and the ending

Two years after getting married, Jun lives alone in Tokyo since her husband moved to a rural area. The two couldn't let go of their regrets, so they got married, but followed their own impulses and passionately searched for each other's bodies as if to fill their free time. And despite understanding that it was a twisted relationship different from those days, he fell into a mistress relationship because he was addicted to adulterous SEX.