“My father and mother were honest, though poor—”“Skip all that!” cried the Bellman in haste.“If it once becomes dark, there’s no chance of a Snark—
We have hardly a minute to waste!”
(Lewis Carroll, The Hunting of the Snark)
For the rest of the book we follow him as he returns to the little town in O. prefecture in northern Kyushu where the crimes he was arrested for were committed. (I imagine readers will guess that O stands for Oita. You find this kind of coy documentary style of naming from time to time in Japanese fiction; I'm not quite sure what it means.) Along the way he thinks back on the events leading up to his imprisonment. This means that most of the short book is a long series of flashbacks from his childhood through the various jobs he had in life and his failed marriage up to the actual crime.
I'm not very fond of flashback narrative in any case; and when it takes up most of the book, my tolerance gets even thinner. As we approach the end, the possible surprises in the narrative are thinned out. In the end the narrative structure has its justification, of a sort, although readers may not be entirely surprised to find that it is a version of storytelling's second most hated narrative idea.