The protagonist, Akiyuki, is in the height of puberty and just needs to have sex! However, confession after confession ends in rejection.

Right at the start of the summer vacation, things take a sudden turn when his mother, Rio - unable to bear the sight of her sulking son - drops a single bombshell.

"Ill be your girlfriend for the summer!"

Even if it comes with caveats, the protagonist gets fired up at the prospect of having a girlfriend.

As hes "disciplined" with a mix of carrot and stick, can he really end up having sex with his mother?!