Adult PC Game: Appetite - My Sexually Frustrated Mother's Sex Lesson - Domestic Affairs I Can't Tell My Dad About Final Archive

Overview:
Hajime wakes up to his mother, Shizuka's voice like usual.
Shizuka pulls on the futon trying to wake up the reluctant Hajime, only to find out Hajime's bottom-half fully naked and erect.
Hajime panics remembering last night, he fell asleep while watching porn and touching himself.
Just as Hajime tries to think of an excuse, Shizuka grabs his penis and begins stroking it.
'It's been a while since I've had something this big' - Shizuka says with a lewd expression on her face.​