my motherinlaw, machimura koyako.

Eko (Machimura), who died with her husband, was related and married Masahiko. Although she was a good-natured husband and wife, her son Shunichi, who had been raised by Masahiko with only one man, did not enjoy the existence of Eko. One day, Koike, an insurer who took care of her husband after she passed away, appears before Eko. Koike is a small pond where the body of Eko is forced to break down as if riding into the nest of love of the couple and destroying happiness. And Shunichi, who happens to see it... The chain of misfortunes opens up.