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 has discovered that her husband Kazuma's cheating on her with her friend Rui—and even worse, Kazuma has secretly fathered a child with a third woman. It's too much to bear, and she moves out of their apartment. But between her martial strife and work-related stress, she invites her ex-boyfriend Akiyama out for a drink to let off some steam. But just as they meet, she receives a call from the hospital her mother is in ...