Wasaburo Oishi's Journal: Chapter 5 Summary and Analysis
⚠️ Spoiler Warning: This guide contains detailed spoilers for the entire novel. Proceed only if you've finished reading or are comfortable knowing the plot.
All events and character details are drawn directly from the chapter text; no outside information is included.
The chapter is presented as a journal entry by Wasaburo Oishi, dated June 1927, and it focuses on his encounter with the island's oldest resident and the old man's explanation for the spreading madness at the hospital.
This page provides a chronological summary, a list of key events, an analysis of character development, a discussion of themes and symbols, an explanation of why the chapter matters, and three study questions with answers.
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Spoilers for Chapter 5 follow.
Summary
In his journal entry for June 1927, Wasaburo Oishi records a visit to the oldest man on the island, a figure who claims to be over 120 years old.
Oishi notes that while the claim is almost certainly exaggerated, the man is undeniably very old and is widely regarded as the most knowledgeable person about the island's traditional ways.
The meeting takes place in the old man's humble dwelling, a hovel perched on a rocky peninsula jutting over the ocean.
The old man's great-granddaughter serves them tea brewed from nettles.
During the conversation, the old man tells Oishi that the island is home to three of the most powerful kami in the Shinto pantheon: Fujin, the god of wind; Raijin, his brother, the god of lightning and storms; and Raijin's son, Raitaro, the god of thunder.
He explains that these deities reside on the island and that one might see them during a storm.
The old man then asks Oishi directly whether he, as a scientist, believes in the gods.
Oishi responds that all Japanese people believe in the gods at least a little, regardless of how modern they are.
He goes further, claiming to be an old friend of Fujin and saying, with a wink, that he has come to renew their acquaintance.
This playful remark makes the old man smile.
Shifting to a more serious topic, Oishi asks if there is a god or demon responsible for the madness spreading at the hospital.
The old man answers without hesitation, attributing the affliction to a demon called the jorogumo—a name Oishi has never encountered.
When Oishi asks for more details, the old man explains that the island, particularly the area around the hospital, serves as a kind of nest where the jorogumo lays her eggs.
Oishi, assuming the demon might be a bird, asks if it is a bird demon.
The old man laughs and corrects him: the jorogumo is a spider.
Key Events
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Oishi meets the oldest man on the island, who claims to be over 120 years old.
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The old man's great-granddaughter serves nettle tea during the visit.
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The old man describes three kami—Fujin, Raijin, and Raitaro—as the island's resident deities.
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The old man asks Oishi if he believes in the gods, given his scientific background.
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Oishi claims that all Japanese believe a little and declares himself an old friend of Fujin.
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Oishi asks about the cause of the madness at the hospital.
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The old man names the jorogumo as the responsible demon and says the hospital area is its nesting ground.
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Oishi mistakenly assumes the jorogumo is a bird; the old man corrects him, revealing it is a spider.
Character Development
Wasaburo Oishi emerges as a man caught between two worlds.
As a scientist, he might be expected to dismiss supernatural explanations, yet he openly admits to a cultural belief in the gods.
His claim to be an old friend of Fujin is delivered with a wink, suggesting a playful, almost ironic relationship with tradition.
This moment reveals Oishi's willingness to engage with local beliefs, even as he seeks a rational understanding of the hospital's madness.
His ignorance of the jorogumo highlights his outsider status, despite his Japanese heritage.
He is a modern man confronting an ancient, unfamiliar mythology.
The old man serves as a repository of traditional knowledge.
He is confident in his explanations, speaking of the kami and the jorogumo as matters of fact.
His laughter at Oishi's assumption about a bird demon underscores the gap between the scientist's expectations and the island's actual folklore.
The old man's authority is established by his age and reputation, making his claims weighty even if Oishi cannot fully verify them.
The great-granddaughter appears only briefly, but her role in serving tea grounds the scene in domestic ritual, reinforcing the old man's connection to the past.
Themes, Symbols, or Motifs
Science vs. Traditional Belief: The chapter directly confronts the tension between modern scientific thinking and indigenous spiritual beliefs.
Oishi's dual stance—scientist yet believer—illustrates how these worldviews can coexist, even if uneasily.
The old man's matter-of-fact attribution of the madness to a demon challenges the rational framework Oishi might prefer.
The Supernatural as Explanation: The old man offers a supernatural cause for the hospital's affliction, framing the madness as the work of a demon.
This introduces a possible alternative to medical or psychological explanations, setting up a central conflict for the novel.
The Island as a Place of Hidden Forces: The old man's description of the island as a home to fierce kami and a nesting ground for a demon suggests that the island is saturated with spiritual power.
The specific mention of the hospital area as the nesting site ties the supernatural directly to the outbreak.
The Jorogumo as Symbol: The spider demon is a potent symbol.
Spiders are often associated with weaving, entrapment, and hidden danger.
The jorogumo's eggs, laid in the hospital area, imply a slow, insidious spread of madness, much like a web being spun.
The correction from bird to spider emphasizes the unexpected and creeping nature of the threat.
Why This Chapter Matters
This chapter is pivotal because it introduces the supernatural element that may explain the central mystery of the novel.
The jorogumo is presented as a concrete, named entity, giving the madness a potential cause beyond the mundane.
It also deepens Oishi's character, showing him as a man who respects tradition while seeking scientific answers.
The chapter establishes the island as a place where ancient gods and demons are active, and it foreshadows that the hospital's troubles may have a non-human origin.
The old man's knowledge positions him as a key source of information, and his correction about the spider hints at the specific nature of the threat.
For readers, this chapter shifts the narrative from a purely historical or medical mystery to one with folkloric and possibly supernatural dimensions.
Study Questions and Answers
1. How does Oishi reconcile his scientific identity with his claim to believe in the kami?
Oishi does not see a contradiction.
He tells the old man that all Japanese people believe in the gods at least a little, regardless of modernity.
He frames his belief as a cultural inheritance rather than a scientific conclusion.
His playful claim of friendship with Fujin suggests he is comfortable using traditional language without fully committing to a literal belief.
This allows him to maintain his scientific credibility while respecting the old man's worldview.
2. What does the old man's description of the jorogumo suggest about the nature of the madness at the hospital?
The old man says the jorogumo lays her eggs in the area around the hospital, implying the madness is not a random illness but a deliberate, demonic infestation.
The spider imagery suggests a creeping, entangling force that spreads gradually.
The fact that the demon is a spider rather than a bird indicates a hidden, ground-level threat, one that might be difficult to detect or escape.
This description points to a supernatural cause that could be combated only through spiritual means, not medical ones.
3. Why might the author have chosen a spider demon rather than a bird or another creature?
Spiders are traditionally associated with weaving, patience, and entrapment.
A spider demon that lays eggs in a hospital suggests a slow, insidious process of contamination, mirroring how an epidemic might spread.
Unlike a bird, which is visible and mobile, a spider is often hidden, lurking in corners.
This choice reinforces the idea that the madness is something subtle and pervasive, not an overt attack.
It also ties into Japanese folklore, where the jorogumo is a known yokai, adding cultural authenticity to the story.