Miyagi-san, who was still newlywed, had been active as a tutor at a cram school before getting married.
Having become a full-time housewife, perhaps the tension had eased, leading her to start gambling and going out at night for the first time.
Once she started these activities, her rational limits collapsed, and her sexual desires overflowed.
Over the past two months, she has had physical relationships with several men and apparently currently has two sex friends.
The atmosphere around her is pure, but her hidden sexual desires have grown immense, and she volunteered to appear to satisfy them.
