According to http://www.dlsite.com/ecchi-eng/work/=/product_id/RE190859.html the story is
Contents
I want to lose my virginity by graduation... Full of impatience Keita begins going out with the beautiful Miyu.
But, Miyu's mother is on the watch for predators.
In order to be acknowledged by her mother, Keita seals up his lustful heart.
On the other hand, Miyu is r*ped by Taisuke, some guy that her mother introduced her. She wants to have sex with Keita to forget this traumatic event but...
Their intentions cross paths, without mingling.
Keita starts to get suspicious, turning eyes of doubt at Miyu. But, by then it was already too late......
So basically what i got from this is that the mother is a bitch !
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