During The 8 Hours That My Son Is Playing With His Friends At The Public Swimming Pool, I Am Indulging In Adulterous Sex With The Coach Of His Swimming Class.... Mina Kitano

Several years into marriage... Mina, living with her husband and only son Takashi, felt a bit bored with her mundane daily life. One summer day, the story begins when she goes to deliver her son's forgotten item to the public pool and meets swimming coach Yuta (a college student). A few days later, when Mina runs into Yuta on the street, she invites him, saying, "Want to come eat at my place?" From that day until summer ends, Mina becomes addicted to cheating sex while her son is at the public pool... When a <mother> transforms into a <woman>, no one can stop her anymore.