Short Fiction · Character

Seiji

A boatman of Fukagawa who has rowed the Suruga-ya family for ten years, familiar with Tsuya and Shinsuké, and perhaps the only one who knows the river's secrets.

major

Also known as Seiji-san

First appearance: short fiction

As a major figure in Short Fiction, Seiji is not background color—the story leans on what they do once the chapter opens.

Wealthy boatman who killed Shinsuké (via Santa) and later takes a third wife; Tsuya and Shinsuké plot to destroy him.

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Seiji is a boatman patronized by the Suruga-ya household for a decade, ferrying them to clam-gathering picnics and river festivals until he knows Tsuya and Shinsuké as well as he knows the tides. His familiarity with the family places him at the edge of their private turmoil, a witness whose silence or speech could tip the balance. In the early-middle arc, he represents the world outside the house—the river, the city, the possibility of escape—and his presence makes the planned flight to Fukagawa feel both real and risky.

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The fuller portrait of Seiji sits in Reading Lens — open the free preview to keep reading with notes on the page.

See Seiji in short fiction

Character Web

7 connections

A slice of how Seiji sits in the book — open the reader for the full interactive map.

Relationship types

Romantic
Rivalry
Friendship
Other

Character groups

Male authority and minor figures
Female character network
Protagonist

+2 more in the full Character Web

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Narrative arc

Story tension across the book.

Setup
Breaking point

This excerpt is the dramatic climax because it presents the story’s emotional and psychological peak through S…

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Relationships

Tsuya
romantic · positive
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her. How this plays out →
Shinsuké
rivalry · negative
Santa
friendship · positive
Tokubey
rivalry · negative
Tsuya
romantic · positive
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her. How this plays out →
Shinsuké
rivalry · negative
Tsuya
romantic · positive
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her. How this plays out →
Shinsuké
rivalry · negative
Santa
friendship · positive
Tokubey
rivalry · negative

Tsuya
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her.
Shinsuké
Seiji and Shinsuké are rivals, likely competing for Tsuya's affection or social standing.
Santa
Santa and Seiji are friends or allies, perhaps sharing a lighthearted or supportive bond.
Tokubey
Seiji and Tokubey are rivals, likely competing for Tsuya or social dominance.
Tsuya
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her.
Shinsuké
Seiji and Shinsuké are rivals, likely competing for Tsuya's affection or social standing.
Tsuya
Seiji is a suitor or lover of Tsuya, adding to the romantic entanglement around her.
Shinsuké
Seiji and Shinsuké are rivals, likely competing for Tsuya's affection or social standing.
Santa
Santa and Seiji are friends or allies, perhaps sharing a lighthearted or supportive bond.
Tokubey
Seiji and Tokubey are rivals, likely competing for Tsuya or social dominance.

Relationship notes

How these ties play out is in the reading companion — open the free preview.

See Seiji in short fiction

In the story

Seiji appears across 1 companion beat. Open any chapter in the free preview to see the notes beside the text.

A Springtime Case

Chapter companion notes

Spoil-light check-ins for Seiji unlock in the free preview.

See Seiji in short fiction

See Seiji in A Springtime Case