Wife forced to abstain from a chastity belt

Aika is a beautiful wife who lives a happy life with her kind husband, Kosuke. I promised to have a baby when I got home from a business trip, and was waiting for my husband to return home. One day, her ex-boyfriend Yuji appears at her husband's house where she is away and is threatened and raped for a past accident. A chastity belt is attached to the gap in her daze at the peak of orgasm. Yuji learns that Aika's sexual desire is strong and forces her to abstain, and her sexual desire reaches her limit when she returns to her husband. Unable to bear the tingly uterus, she accepts the worst man's cock before her husband is around and conceives...