Wasaburo Oishi in The Fervor: Character Analysis
Overview
Wasaburo Oishi is Meiko Briggs's father, a Japanese meteorologist whose 1927 sabbatical on a remote island off the coast of Shikotan sets the novel's central catastrophe in motion. He appears almost entirely through journal entries interleaved with the 1944 narrative, making him a figure whose past actions reverberate decades later. His dual legacies—the jet-stream research that inadvertently enables the Fu-Go balloon attacks and the spider-silk tincture that offers a cure—position him as both unwitting architect of the outbreak and accidental source of its remedy.
Oishi is a man caught between two worlds: the scientific rationalism of his training and the folkloric warnings of the island's inhabitants. He dismisses the old man's talk of kami and demons as superstition, yet he cannot fully ignore them. His journals record both his measurements and his unease, creating a document that later becomes the key to understanding—and potentially stopping—the fervor.
Plot Role
Oishi's journal entries function as the novel's historical backbone, providing readers with information the 1944 characters lack. Through his May 1927 entry, readers learn that the island houses a colony for society's undesirables—the mad and deformed sent there to die—and that the hospital director has warned him to send his family back to the mainland immediately. The director notes that new arrivals have been plunging into madness faster than ever, with no known cause.
In June 1927, Oishi meets the oldest man on the island, who tells him about the three kami—Fujin, Raijin, and Raitaro—and attributes the hospital's madness to a demon called the jorogumo, which the old man identifies as a spider, not a bird. This conversation plants the seed of Oishi's later investigation.
By July 1927, Oishi has begun noticing tiny translucent spiders throughout his cottage. The housekeeper refuses to kill them, explaining they are considered children of Fujin and lucky. Oishi sends specimens to an entomologist at Meiji University, noting that Japan reportedly has no poisonous spiders but he wants certainty.
The journal entries culminate in September 1927, when Oishi's attempts to develop an antivenom fail, but he discovers that his daughter Meiko, who was playing with an empty spider web, shows no signs of infection. He distills the web into a tincture and tests it on an animal showing early agitation, with promising results.
Decades later, Meiko reads her father's journals and learns that the spiders caused the madness but also provide a cure, and that his research on Wasaburo's Winds enabled balloons to carry spider eggs from Japan to the United States. The journals thus serve as both explanation and instruction manual.
Motivations and Traits Shown Through Actions
Oishi's primary motivation is scientific validation. His superiors at the Central Meteorological Observatory consider his jet-stream research a failure and have told him this sabbatical is his last chance. He believes his discovery will prove important one day, calling it his greatest contribution to mankind. This ambition drives him to bring his family to a dangerous island and to persist despite warnings.
His scientific curiosity is evident in his decision to visit the hospital, which he does partly out of obligation but also out of genuine interest in understanding what afflicts the patients. When he encounters the spiders, his instinct is to investigate rather than flee—he packs specimens and sends them to a colleague for identification.
Oishi also demonstrates genuine concern for his family. When he feels followed during his evening walk in July 1927, he walks through the night rather than lead any threat back to his cottage, thinking of his daughter Meiko. His journal records that he could not bring danger to her doorstep.
Yet Oishi is also pragmatic to a fault. When Yuriko delivers her ultimatum—abandon the jet-stream research and pursue advancement—he concedes, writing that he cannot refuse her and that she is right. This decision, while practical, means his findings are never fully shared or developed.
Chronological Arc
Oishi's arc spans roughly five months in 1927, from May to September, with his legacy extending into the 1944 narrative.
May 1927: Oishi arrives on the island with Yuriko and Meiko. He visits the hospital and learns of the accelerating madness. The director advises him to send his family back immediately.
June 1927: He meets the old man, who tells him about the kami and the jorogumo. Oishi's response—claiming to be an old friend of Fujin—shows his attempt to bridge folklore and science.
July 1927: The spiders appear throughout his home. He sends specimens to Meiji University. He experiences the unsettling night walk where he glimpses a blood-red shape and finds no footprints. Yuriko delivers her ultimatum.
August 1927: He releases his final balloons from Fujin's plain. Radio signals confirm his wind measurements, proving patterns in higher altitudes that could change Pacific travel.
September 1927: The entomologist confirms the spider species is unknown and poisonous. Oishi's antivenom attempts fail. He discovers the tincture from spider silk.
Legacy (1944): Meiko reads his journals, learns the truth about the spiders and the cure, and agrees to testify before the Senate, citing her father's failure to share his discoveries.
Relationships
Yuriko Oishi: Oishi's wife is the practical counterweight to his ambition. She is furious about his work getting nowhere and delivers an ultimatum that he accept. Their relationship shows the tension between scientific dreams and family obligations.
Meiko Oishi (later Briggs): Oishi's daughter is central to his story. His protective instinct drives him to walk through the night rather than lead danger to her. She is also the instrument of his most important discovery—her apparent immunity to the spider venom leads him to the tincture. Decades later, she inherits his journals and his unfinished work.
The Old Man: This island elder serves as Oishi's folklore informant, introducing him to the kami and the jorogumo. Their conversation represents the novel's central tension between belief and rationalism.
The Gamekeeper: He assists Oishi in trapping animals for the antivenom experiments, though his fear of the rabid specimens leads him to notify mainland authorities, resulting in the ferry being shut down.
Key Decisions and Consequences
Bringing his family to the island: Oishi ignores local warnings and brings Yuriko and Meiko. This decision exposes them to the spiders and the island's dangers, though it also leads to Meiko's apparent immunity and the tincture discovery.
Investigating the spiders: Rather than simply avoiding them, Oishi studies them, sends specimens for identification, and attempts to develop an antivenom. This scientific approach yields the tincture but also documents the spiders' properties in ways that later enable their weaponization.
Agreeing to Yuriko's ultimatum: Oishi abandons his jet-stream research, but his findings have already been recorded and his balloons launched. The radio signals confirming his measurements arrive in August, proving his theory—but by then he has already committed to abandoning the work.
Not sharing his discoveries: Meiko explicitly cites her father's failure to share his discoveries when she agrees to testify before the Senate. His journals remain private documents, and the knowledge they contain—both about the spiders and the cure—is nearly lost.
Theme and Symbol Connections
Oishi embodies the novel's tension between folklore and scientific rationalism. He dismisses the old man's talk of kami as superstition, yet his own journal records phenomena that defy rational explanation—the blood-red shape with no footprints, the spiders appearing everywhere. His claim to be an old friend of Fujin suggests a willingness to entertain belief even as he measures wind patterns.
His story also connects to the weaponization of scientific discovery. His jet-stream research, intended as a contribution to meteorology, is repurposed to carry spider eggs across the Pacific. The novel suggests that scientific knowledge is neutral but can be weaponized by those who control it.
Oishi's failure to share his discoveries connects to the theme of erasure and silencing of Japanese American voices. His journals—written in Japanese, documenting a Japanese scientist's work—are nearly lost, and the knowledge they contain is suppressed by the military's Project APOGEE.
Finally, Oishi's story connects to the fervor as a contagious disease of fear and hatred. His observation that the spiders avoid biting mammals when left alone suggests that the venom is not naturally aggressive—it is weaponized by human intervention. The fervor, likewise, is a disease of fear that spreads through human choices.
Questions and Answers
1. Why does Oishi agree to abandon his jet-stream research after Yuriko's ultimatum?
Oishi concedes because he cannot refuse his wife and because he acknowledges she is right. His journal records that she argues his work is getting nowhere, that he should pursue advancement and earn more money for the family rather than chase what she calls a foolish theory. He writes that she is right, suggesting he has internalized the practical argument even as his scientific ambitions remain unfulfilled.
2. What leads Oishi to discover the spider-silk tincture?
Oishi finds Meiko playing with what he initially fears is a sac of spider eggs but realizes is an empty web. After monitoring her closely and seeing no signs of infection, he hypothesizes that the silk might contain a protective agent. He distills the web into a tincture and tests it on an animal showing early agitation, which seems to halt the progress of the venom.
3. How does Oishi's encounter with the old man shape his understanding of the island?
The old man introduces Oishi to the kami—Fujin, Raijin, and Raitaro—and attributes the hospital's madness to the jorogumo, a spider demon. This conversation gives Oishi a folkloric framework for what he later observes scientifically. His response—claiming to be an old friend of Fujin—shows his attempt to bridge belief and rationalism.
4. Why does Meiko cite her father's failure to share his discoveries when agreeing to testify?
Meiko agrees to travel to Washington to provide blood for an antidote and testify before the Senate, citing her father's failure to share his discoveries as a lesson. His journals contained the knowledge of both the spider's danger and the cure, but he never published or shared them widely, contributing to the outbreak's devastation.
5. What role do Oishi's journals play in the novel's resolution?
The journals serve as both explanation and instruction. Meiko reads them and learns that the spiders caused the madness but also provide a cure, and that her father's wind research enabled the balloons to carry spider eggs from Japan to the United States. The journals also contain the recipe for the tincture, which becomes the basis for the antidote developed from Meiko's blood.
For more on how Oishi's legacy shapes the novel's conclusion, see the ending explained page, or explore common questions and answers about the book.