Anime XXX - Like Mother Episode 1

Yukiko is a young wife who is lonely and dissatisfied with her life. Her spouse Kouichi is unable of meeting her requirements, and the two sleep in separate beds. To add to her frustration, Yukiko discovers photographs on her husband's phone of an unknown naked lady; also, one night, she sees her two children - who are not blood relatives - in bed together. Yukiko spends her time at home attempting to meet her own wants. Until one day, her husband's father pays her a visit and witnesses her in an uncomfortable circumstance. That is when things begin to alter in her family...