An aging man confronts the decline of his physical health while becoming increasingly obsessed with his daughter-in-law. The protagonist, Utsugi, records his intimate thoughts and desires in a private journal as he navigates the constraints of his failing body and the social expectations of his family. His fixation on Satsuko, his daughter-in-law, serves as the primary catalyst for the narrative, creating a tense domestic atmosphere. The story utilizes an epistolary framework, allowing the reader direct access to the protagonist's internal rationalizations and moral conflicts.

Readers and critics frequently discuss the clinical precision with which Tanizaki dissects the protagonist's obsession. The narrative is often noted for its unflinching look at the intersection of mortality and desire, avoiding sentimentality in favor of psychological realism. Discussion often centers on the unsettling nature of the protagonist's perspective and how it challenges the reader's empathy. Many highlight the author's ability to maintain a controlled, detached tone even when describing highly volatile internal states. The work remains a significant point of reference for those interested in the complexities of late-career literary output.