Suzuki Koichi, a 30-something hikikomori shut-in, allows his mother to dotingly tend to his needs. When she discovers that Koichi has killed himself, the shock is so great she loses consciousness and her memory of that day.
Shiori, Yukiko, Kyoko and Sachiko continue to live each day with untold feelings inside. Unable to forget a colleague on a trip, a father who is ill, a friend who works at a store that is about to close, and a long-lost husband, each woman takes a step forward. There is a light that sometimes embraces them, calmly and gently.
She insists she needs to know everything and be told the extent of it when a woman catches her husband kissing another woman at their apartment upon returning from the book store. It turns out the man invited the woman in promising to show her his birds.
At a train station in the suburbs of Tokyo, an accident takes place causing death and injury. Tsuyoshi is at the scene and witnesses the death of a woman. Right before the accident occurred, Tsuyoshi took a photograph of the woman, who carried a gentle look. Later, Tsuyoshi learns the woman has a daughter named Kiriko. Tsuyoshi meets Kiriko.
