The bond between the women is forged through shared misery rather than friendship.

The story follows four women working the grueling graveyard shift at a bento box factory in suburban Tokyo. Their lives are defined by poverty, exhaustion, and domestic frustration:

Kirino highlights the "double burden" of Japanese women—low-wage labor and domestic servitude.

Originally published in 1997, it won the and later became a finalist for the Edgar Award in its English translation. Core Premise

It paints a bleak picture of modern Tokyo, where individuals are easily discarded and forgotten. Why It Stands Out