My friend's wife is a lewd private tutor

Unable to see Toru, who is on his second round of the year, his father asks his friend's wife, Ichika, to become a private tutor, but Toru is distracted by Ichika's beauty and body, and is unable to concentrate on his studies. Unable to see Tooru, Ichika refreshes Tooru's body and mind with a lewd special lesson that releases her accumulated sexual desires.