Nishida, who delivers convenience store products, witnesses Ichika, a married woman who works at a convenience store that he does business with, crying one day. Curious, he calls out to her and ends up making a date to go drinking with Ichika. As he listens to Ichika's troubles while drinking at the bar, he finds out that she is having trouble with a lack of sex. Influenced by alcohol, Ichika uses her breasts to seduce the young Nishida, but... the 105cm big-assed married woman's troubles are not just about sex...