Chapter 40 “Prodigal” — Summary, Themes, 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.

Summary

Jun wakes in his parents’ living room, rested for the first time in what feels like ages. The room is filled with strange robotic animals: a tiger draped in a white sheet, a giant bird with a spoon-shaped bill perched on the massage chair, and an otter curled up in the kitchen sink. He finds his father Yosep kneeling beside the tiger, repairing its internal wiring with gloved hands. Burn scars gleam on Yosep’s forearms.

The conversation between father and son is stiff and halting. Jun remembers his father’s eating disorder—Yosep would set the table and then slip away without eating—and realizes his family lived with this broken reality for years without naming it. Yosep reveals he threw out the Lifestation and ordered porridge, remembering that Jun is now vegetarian. Jun eats quickly, scalding his mouth, then tries to reach work. There’s no answer from Sgt. Son.

Yosep asks Jun to drive him to the robot museum for a talk. On the way through Gwanghwamun Square, they pass a right-wing protest: flags, drums, chants about deporting immigrants and eliminating universal basic income. Yosep mentions that Jun’s mother is flying in for Chuseok, which triggers Jun’s memory of his grandmother forcing Yoyo to stand in the corner and power down.

The conversation turns to Morgan’s robot Stephen, which Yosep identifies as a Christian apologetic—a robot designed to defend Christianity. Jun is annoyed by his father’s detached, analytical tone about Morgan’s neuroses, which Jun believes were shaped by their father’s career-first priorities. Yosep then asks about a rabbit from his lab, and reveals that Morgan was the one who found Jun in the tub.

Jun tells his father he spoke to Yoyo in VR, but Yosep insists it couldn’t have been him. Yosep describes the acetophenone experiment: researchers trained male mice to fear the smell of cherry blossoms through electric shocks, and their offspring inherited both the smell receptors and the fear response. It’s an epigenetics study about inherited trauma.

At the museum, Yosep tells Jun he wasn’t breathing when they found him. Jun insists it was barely a relapse, not a real suicide attempt—he didn’t want to die, even if he didn’t particularly want to live. Yosep confesses he thought he’d lost his son again, blaming the “iniquity in my blood” and the sins he passed on. Jun laughs bitterly, telling his father not everything is about him.

Jun reflects on his father’s childhood: two starving boys left alone for days, a fire, scars on Yosep’s arms. He remembers overhearing his grandmother in the kitchen, and the image of an older brother covering someone like a turtle shell. Jun can’t forgive his father, but he understands the crushing weight of sacrifice—the way someone covering you with their body means your chest never fully expands again. His love for his father will always carry the scent of cherry blossoms, searing a path to grief.

Key Events

Jun wakes in his parents’ home surrounded by robotic animals his father is repairing
Yosep reveals he threw out the Lifestation and ordered vegetarian porridge
Jun fails to reach Sgt. Son at work
Father and son drive through a right-wing protest in Gwanghwamun Square
Yosep mentions Jun’s mother is arriving for Chuseok
The conversation turns to Morgan’s robot Stephen and a lab rabbit
Yosep reveals Morgan found Jun in the tub
Jun claims he spoke to Yoyo in VR; Yosep dismisses it
Yosep describes the acetophenone epigenetics experiment on inherited fear
Yosep confesses he thought he’d lost his son again
Jun reflects on his father’s childhood scars and the weight of sacrifice

Character Development

Jun is in a fragile state, recovering from what he calls “barely a relapse.” He’s honest about not wanting to die but not particularly wanting to live either. His memories of Yoyo, his grandmother’s cruelty, and his father’s eating disorder surface as he navigates this uneasy homecoming. He can’t forgive his father, but he’s beginning to understand the weight his father carries.

Yosep shows a side of himself that’s been hidden: he threw out the Lifestation, ordered food Jun would actually eat, and confesses he thought he’d lost his son again. His description of the acetophenone experiment reveals his belief that trauma is inherited—that his own “sins” have been passed down. His scars from a childhood fire hint at a history of sacrifice and survival.

Morgan is present only through conversation, but the revelation that she found Jun in the tub adds a new dimension to her character—she’s the one who saved him.

Themes, Symbols, or Motifs

Inherited trauma: The acetophenone experiment is the chapter’s central metaphor. Mice trained to fear cherry blossoms pass that fear to their offspring, just as Yosep believes his own trauma and “sins” have been passed to Jun.

The prodigal son: The chapter title invokes the biblical parable of the returning son. Jun’s homecoming is uneasy, marked by stiffness and unspoken grief, but it’s still a return.

Robots as family: The robotic animals in the living room—tiger, bird, otter—are both Yosep’s work and his companions. The tiger’s yawn and the otter offering a soy sauce plate blur the line between machine and creature.

Cherry blossoms as trauma symbol: The scent of cherry blossoms, once associated with the experiment’s electric shocks, becomes Jun’s metaphor for his love for his father—something that sears a path to grief.

Political protest and nationalism: The right-wing protest in Gwanghwamun Square provides a backdrop of nationalist fervor, contrasting with the intimate family drama unfolding in the car.

Why This Chapter Matters

This chapter is the emotional core of the father-son reconciliation arc. It reveals the circumstances of Jun’s suicide attempt (Morgan found him in the tub), Yosep’s confession about losing his son, and the family’s inherited trauma through the epigenetics experiment. It also deepens the mystery of Yoyo—Jun’s claim that he spoke to Yoyo in VR is met with Yosep’s flat denial, leaving the question of whether Yoyo is truly gone unresolved. The chapter reframes Yosep from a distant, career-obsessed father into a man carrying his own scars and guilt.

Study Questions

1. Why does Yosep describe the acetophenone experiment to Jun at this particular moment?

Yosep describes the experiment after Jun claims he spoke to Yoyo in VR. The experiment—mice inheriting a fear of cherry blossoms—is Yosep’s way of explaining his belief that trauma is passed down through generations. He sees Jun’s relapse as evidence of inherited “sins,” and the experiment is his attempt to articulate why he feels responsible for his son’s suffering.

2. What does Jun mean when he says his love for his father will always reek of cherry blossoms?

The cherry blossom is the scent from the acetophenone experiment—the smell that triggers inherited fear. Jun is saying his love for his father is inseparable from grief and trauma. The love exists, but it’s always accompanied by the knowledge of what his father did (sending Yoyo out) and what his father endured (the childhood fire, the scars). Love and pain are fused.

3. How does the chapter complicate the idea of forgiveness?

Jun explicitly says he can’t forgive his father, but he understands the weight of sacrifice—the image of someone covering you with their body so you can live. The chapter suggests that understanding and forgiveness are separate. Jun can recognize his father’s pain and the crushing weight of survival without absolving him. The “prodigal” title is ironic: the son returns, but not to a clean reconciliation.