This is a book review of the novel "poison" by Fukaya Tadaki, which explores a murder mystery set in a hospital.

The central theme of the novel, as described by the review, is the concept of "poison" operating on both a physical and psychological level, where the murder weapon (a muscle relaxant) mirrors the toxicity present in human relationships.

This review suggests that the book is not merely a whodunit but a deeper examination of the negative cycle of transmitting emotional "poison" and emphasizes that self-awareness is the crucial first step toward breaking this destructive chain.