Yui Asakura (Asumi Nomura), who married into the Asakura family, lived a suffocating life with her strict mother-in-law Mitsuko (Mitsuko Qiu) who was strict about rules.The spiritual pillars are her husband Wataru (Kasahara Hideyuki) and 5-year-old son Satoru.I have a good relationship with my husband and have never thought about divorce.
However, one day, Yui saw her husband Wataru with Fuyumi Shinohara (Eriko Sato), who was suspected of cheating on her.Unable to bear it, he goes to Asuka (Marijun Takahashi)'s office.
Asuka, Yui, and Jun (Higuchi Yukihei) caught Wataru coming out of Fuyumi's house and questioned him about his cheating, but Wataru denied it, saying that Fuyumi was a childhood sweetheart and was like a sister.In addition, while showing the diagnosis certificate, Fuyumi explained that she had terminal gastric cancer and only had half a year left to live, and begged Yui: “Can't you let me stay with him?”
Yui accepts her husband's explanation, but Asuka is wary of Wataru.An investigation begins on Fuyumi, who has only half a year left to live.