Fallen Part-Time Wife: Succumbing to an Affair with a Younger Man... ^v1.00

Sunao Saiki failed the entrance exam due to the shock of a terrible heartbreak, and left home determined to make a change.
At a restaurant where he works part-time, he meets Ayano Shinonome, a kind and attractive older woman.
Sunao found out that they lived in the same apartment building, and although she was married, Sunao developed a close relationship with Ayano.
Eventually, he learns that her first love was her uncle, who was much like himself,
Unable to control his feelings of longing and jealousy, Sunao seeks a deeper relationship with Ayano.

Sunao is overcome with memories of her first love when she was young, and her straight feelings for him,
Ayano’s heart is also shaken between her husband who leads a sloppy life. ……​

Game is avaialble for Windows