Wife-in-law lesbian training

A proposal after two years of dating. Nozomi thought that she could live a happy life with her beloved husband and his mother-in-law, Chitose, forever. However, those thoughts of Nozomi quickly come to an end. A woman who calls herself ``Chizuru'' comes to the house during her husband's long business trip. When I heard the story, Chizuru was actually my husband's biological mother. Nozomi feels distrustful of Chizuru, who has left her husband alone for decades, but eventually Nozomi comes to know the real reason why Chizuru came back...