Affection, betrayal, desperation-love between grown-ups is never a rational thing.Sayaka, age 35, has lived with the perfect husband for ten years. Perfect, that is, except for his disinterest in raising a child—she wants one badly, but just can’t come clean to him about it. Instead she unloads her frustrations on her younger friend Rui at their favorite bar. They trust each other enough to talk about almost anything—but Rui has a secret she can’t even let Sayaka know about!
Sayaka's husband not only cheated on her with her friend Rui; he even fathered a child with another woman. But when a battered Sayaka rebounds and finally strikes back against Rui, her nemesis switches targets—to Akiyama's son?!