Frustrated Married Women in the Afternoon...

After moving to a new job, he reunites with Mami, a high school girl he admired after admitting to high school.
Her abiding beauty and increased sex appeal are heartbreaking, but the protagonist soars with joy at the reunion.

However, her eldest has become a married man.
Since Mami is her youngest, she treats me kindly, so I see her sexy eyes every day, even though I think she's wrong.
On the other hand, her Mami also secretly burns her limbs with looks of frustration over her husband's sexless behavior.