After Dark

The narrative unfolds over the course of a single night in Tokyo, following a variety of characters who are active while most of the city sleeps. The central character is Mari Asai, a young woman sitting in a Denny's diner, who is approached by a man claiming to know her sister. The story then shifts to a surreal and interconnected series of events involving a crime, a mysterious figure, and Mari's sister, Eri. The book explores themes of urban alienation, loneliness, and the hidden lives that exist beneath the city's surface.