Kutsujoku to Chijoku ni Otosareta Mesu Buta Dorei no Haha

It was just before summer. Misaki's life was falling apart.
She had met one of Kaori's male classmates during a morning jog.
Making love, forced to make love, behind her daughter's back and beside her sleeping husband.
She was powerless, craven, like a sow in lust, and though she hated it she loved it.

[From DLsite English]