58 pages 1-hour read

The Devotion of Suspect X

Fiction | Novel | Adult | Published in 2005

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Chapters 1-4Chapter Summaries & Analyses

Content Warning: This section of the guide includes descriptions of domestic abuse, gender discrimination, graphic violence, and death.

Chapter 1 Summary

High school mathematics teacher Testuya Ishigami leaves his apartment in the morning. Walking the same route that he uses every day, he heads to the Sumida River, across the Shin-Ohashi Bridge, and down to the concrete-paved riverbank, where he passes a tent city of unhoused people and notes the same figures as usual. There is the Can Man, an old man who has lived in the tent city the longest and collects tin cans. He also sees a new resident sitting on a bench, a man whom he calls the Engineer. This man dresses neatly and keeps himself separated from the others, clearly hoping that his situation will be temporary and that he will find a job and a home again soon.


Finally, Ishigami reaches a lunchbox shop called Benten-tei, where he habitually buys a lunchbox. Today, he nervously greets the woman at the counter, Yasuko Hanaoka, who is his neighbor. Ishigami only comes to the shop on the days when she works, but because he is too awkward to speak to her, he simply buys his lunch and leaves.


In Benten-tei, the owners tease Yasuko about the math teacher who is clearly infatuated with her. Embarrassed, Yasuko brushes off their comments. She knows nothing about Ishigami, and after two failed marriages, she is not interested in men. That afternoon, while she is alone in the shop, her second ex-husband, Shinji Togashi, visits. She is horrified that he has found her after five years. He was addicted to alcohol and was abusive, and even after the divorce, he often extorted her for money. She left her previous job as a club hostess and moved several times in an attempt to escape him. Now, she refuses to give him any money, and he leaves.


When she returns home that evening, he follows her to her door. When he refuses to leave, she gives him money. He makes a lewd remark about her daughter from her first marriage, Misato. When he turns away, Misato suddenly rushes up behind him with a large vase and smashes it over his head.

Chapter 2 Summary

Togashi recovers from the blow and attacks Misato. Yasuko rips the electrical cord from her kotatsu (a table with an electric heater) and strangles him with it. She believes that he will kill Misato if she lets go. Misato breaks free of Togashi and leaps to help her mother, holding Togashi’s hands and sitting on his chest. After a couple of minutes, Togashi is dead. Horrified, Yasuko plans to turn herself in, but Misato objects, believing that the entire incident is Togashi’s fault. Misato adds that she will also be arrested because she helped her mother to kill him.


As they argue, Ishigami calls her phone from his apartment next door. He asks what they will do, warns that hiding a dead body is difficult, and offers to help. He comes to the apartment and takes charge, quickly deducing what happened based on small details. He says that if they wish to turn themselves in, he will not stop them, but if they wish to hide the body, he is willing to help. Stunned, Yasuko accepts.


They carry the body to Ishigami’s apartment, where he begins to strip it down. Misato and Yasuko clean their apartment. Ishigami gathers every detail that Yasuko can give him about Togashi’s life, including whether anyone saw him visit her at the shop that day. In Togashi’s wallet, he finds information about the man’s work and learns of a room that Togashi has been renting in the area. For a second, Ishigami imagines Yasuko falling in love with him because of his help, but he knows that this fantasy is ridiculous. He tells her that they will need to create an alibi, and he promises to take care of everything. He feels compelled to protect Yasuko and her daughter no matter what, and he believes that he can find the right solution if he approaches the situation like a complex math equation.

Chapter 3 Summary

Detective Shunpei Kusanagi sits in the physics lab at Imperial University, playing chess with his friend, physics professor Dr. Manabu Yukawa. Kusanagi complains that Yukawa defeats him easily as always, and calls him Detective Galileo, a nickname that he gave Yukawa when they were friends in college. Then Kusanagi receives a call from his police department and leaves to visit a new crime scene.


A body has been found on the bank of the Old Edogawa River. Kusanagi’s partner, junior detective Kishitani, summarizes the crime scene. The body was stripped of all clothing; his face has been smashed in, and his fingerprints were burned off to hide his identity. Kusanagi fears that these measures will make it impossible to solve the murder. However, they find a bicycle on the scene with fingerprints. They also find clothes in an oil barrel. Someone tried to burn the clothes but did a bad job of it, and they are still identifiable.


The detectives find that the bicycle was reported stolen, so they speak to the owner. The woman explains that it was a brand-new bicycle with a chain lock. She left it by the Shinozaki train station on the morning of March 10, and it was gone when she returned at 10 pm. They believe that the murder victim stole the bicycle. Later, they receive a missing-person report from a rental company and learn that a customer rented a room under the name Shinji Togashi. He was seen on the day of March 10 but did not return on March 11, the day the body was found. The fingerprints in the rental room match those on the bicycle. From that, the detectives conclude that the murder victim was Shinji Togashi. Forensics determines that he was murdered late on March 10.

Chapter 4 Summary

Having identified the victim, Kusanagi finds more information about Togashi, including the location of his ex-wife, Yasuko. He and Kishitani visit her apartment. Kishitani does not want to bother her, believing that it is unfair to assume that she had anything to do with the death just because the two were divorced.


Kusanagi tells Yasuko that Togashi is dead. While answering his questions, she says that in the past, Togashi did sometimes harass her, but she claims not to have seen him in several years and says that she does not know what he was doing. Kusanagi asks where she was on the night of March 10, and she says that she and her daughter went to a movie, then to dinner, and finally to karaoke and did not return home until after midnight. Kusanagi feels that her story is suspicious but cannot say why.


On their way out, Kusanagi visits Yasuko’s next-door neighbor, Ishigami, who claims that he did not hear anything suspicious that night and only knows Yasuko in passing. Kusanagi notices a letter from Imperial University on Ishigami’s table and remarks that he has a friend who also went to that college.


After Kusanagi leaves, Ishigami walks to a payphone and calls Yasuko to find out what the police asked her and how she responded. He says that everything is going according to his calculations and tells her not to worry. But he realizes that he did make one mistake: He claimed that he only greeted Yasuko in passing and did not mention that he is a regular at Benten-tei; this omission may look suspicious.


Back at the police station, Kusanagi confirms Yasuko’s alibi at the restaurant and the karaoke place she visited, but he acknowledges that movie alibis are notoriously difficult to prove or disprove. Later, his police chief tells him that Togashi was seen at Club Marian, the club where Yasuko used to work as a hostess. He had been asking about her whereabouts on March 5.

Chapters 1-4 Analysis

The Devotion of Suspect X is told in close third-person, featuring three point-of-view characters. The first chapters open not with the title character, Yukawa, but rather with the perspectives of the two culprits of the novel’s mystery, Ishigami and Yasuko. The third point-of-view character is not Yukawa either, but his friend, the police detective Kusanagi, who (along with Yukawa) does not appear until Chapter 3. Despite being the title character, Yukawa is never a point-of-view character. Instead, his actions are only ever revealed through the perspectives of Ishigami, Yasuko, and Kusanagi. This tactic is reminiscent of Sir Arthur Conan Doyle’s portrayal of Sherlock Holmes, as the famous detective character is only portrayed through the narrative told by his friend, John Watson.


By taking a similar approach, Higashino’s narrative can effectively withhold Yukawa’s thoughts and motives, slowly revealing them and his conclusions about the case as needed, thereby creating a more dramatic effect. This technique has the added advantage of allowing readers to attempt to solve the crime in real time along with Yukawa and Kusanagi. The full disclosure of necessary clues is a primary feature of the honkaku mystery genre, whereas narratives like Doyle’s often withheld the key details until the last possible moment. Instead of following Yukawa’s thought process, The Devotion of Suspect X focuses on the internal thoughts and feelings of Ishigami and Yasuko, crafting complex, sympathetic characters rather than one-dimensional villains. Yet even as Ishigami’s decisions clearly illustrate the ambiguous nature of The Morality of Love and Sacrifice, the narrative also conceals key details about Ishigami’s plan and actions in order to maintain the mystery element of the crime.


Though the novel is in the honkaku tradition—constructed like a puzzle, with the necessary clues provided for the reader—the narrative also includes elements of the “social school” style of mystery story, incorporating social realism and light commentary on broad social issues. For instance, the early chapters introduce reflections on gender discrimination in modern Japan. Though this topic does not rise to the level of a major theme, several characters remark on it briefly at various points. In Chapter 1, Yasuko threatens to call the police on Togashi, but Togashi says that the police will take his side and will tell her that she should be more tolerant of her ex-husband. Yasuko reflects that this is probably true and recalls that the police have never helped her in the past. Although this moment is largely inconsequential to the main storyline, it nonetheless reflects an underlying issue in modern Japan, highlighting the fact that outdated conventions of gender still dictate official behaviors and assumptions. Though Japan has seen much social change in recent decades, traditional Japanese societal norms still place supreme importance on the nuclear family and the power of the patriarch, often shaming divorced or unmarried single mothers. Additionally, Japanese society expects strict levels of propriety, believing that domestic issues such as spousal abuse should be dealt with privately. This social structure of gender oppression underlies Yasuko’s motivation for killing Togashi.


Another Japanese cultural detail that contributes to this structure of gender discrimination is the culture of hostess clubs, as illustrated by Yasuko’s previous place of employment. Hostess clubs are drinking establishments in which women who work as hostesses are tasked with sitting and drinking with the clientele (generally businessmen). In these situations, men can request specific hostesses, who then often receive generous tips for their companionship. In addition to an hourly wage, such hostesses usually receive commissions on the alcohol that their clients purchase. Hostess clubs are strictly monitored by the government and by a hostess manager. Hostesses are not sex workers, and men are not permitted to touch them or to subject them to lewd speech. The appeal of such clubs is merely the company of a pretty woman while the men drink. However, it is not uncommon for regular customers to become infatuated with a particular hostess, and despite the industry’s strict regulations, many people in Japanese society hold a low opinion of hostess clubs in general.


In a novel full of twists, the first major plot pivot occurs in the second chapter when the author chooses to subvert the conventional structure of a mystery novel by revealing the murder and culprits at the very beginning of the narrative. This decision gives rise to an intense element of dramatic irony, as Kusanagi and Yukawa investigate a crime that has already been fully described. As the story unfolds, the mystery element arises from the question of precisely how Ishigami has so effectively hidden the truth from the police. Tension also exists around the uncertainty of whether Yukawa’s skills of observation and analysis will be enough to allow him to uncover that truth. The first chapters also introduce the symbol of mathematics, as seen through Ishigami’s perspective, for he sees the world itself as a complex math equation and acts dispassionately to solve the problem before him. However, his determination to take risky actions on Yasuko’s behalf introduces The Morality of Love and Sacrifice, and the narrative implicitly explores the lengths to which he will go for her sake. The mere fact that he is willing to cover up a murder in order to keep her safe already highlights the fact that love and infatuation can blur a person’s perception of the line between right and wrong.

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