Character Relationship Map: 5 Centimeters per Second

Characters

• Takaki Tohno (played by Hokuto Matsumura) — protagonist

  The protagonist whose life is defined by the physical and emotional distance from his first love. His journey explores themes of time, memory, and the quiet resignation that comes with growing apart f...

• Akari Shinohara (played by Mitsuki Takahata) — protagonist

  Akari is Takaki’s childhood friend, and the two grow close through shared discoveries and conversations. After her family moves away, they keep in touch by writing letters. Their reunion at Iwafune St...

• Risa Mizuno (played by Mai Kiryu) — supporting

  Risa is Takaki’s quiet colleague in his adult life. She draws his attention, but their exchanges remain tentative, and the summary does not describe their relationship developing further. Her presence...

• Young Takaki Tohno (played by Haruto Ueda) — supporting

  As a child, Takaki grows close to Akari through small discoveries and conversations about books, science, trains, and the world around them. They understand one another as fellow newcomers, and this e...

• Young Akari Shinohara (played by Noa Shiroyama) — supporting

  As a child, Akari transfers to Takaki’s school and gradually becomes close to him through shared conversations and discoveries. Their affection deepens, and after her family moves away they keep in to...

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Takaki Tohno → Risa Mizuno (Professional Colleagues) — Risa is part of Takaki's everyday adult environment, but their tentative interactions do not displace his preoccupation with the past.

  At Takaki's job, Risa is described as a quiet colleague who draws his attention, though their exchanges remain tentative.

• Takaki Tohno → Akari Shinohara (Romantic Childhood First Love) — Their childhood closeness becomes an enduring but unresolved attachment that shapes Takaki's memories and adult longing.

  The plot says Takaki and Akari grow close as children, their affection deepens, and they arrange to meet before Takaki moves away. They share an emoti...

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Young Takaki Tohno → Young Akari Shinohara (Social Childhood Friends) — Their early friendship and shared curiosity form the beginning of the bond that later deepens.

  The plot says the children grow close through conversations and small discoveries, understanding one another as fellow newcomers.

Story Analysis

Takaki's life is shaped by a childhood bond with Akari, the distance that separates them, and memories that persist into adulthood.

Plot Progression

1. An Adult Lost in Routine — Takaki moves through work and railway routines while questioning when he lost his sense of wonder. Risa draws his attention, but their exchanges remain tentative as his memories persist.
2. A Childhood Connection — Akari transfers to Takaki's school, and the two grow close through shared discoveries and conversations. Their affection deepens as they understand one another as fellow newcomers.
3. Letters Across Distance — Akari's family moves away, but the children keep in touch by writing letters. Takaki later learns that he will move to Kagoshima, leading them to arrange a meeting at Iwafune Station.
4. The Snowbound Meeting — Takaki carries a letter to Akari as heavy snow repeatedly delays his train. He reaches Iwafune Station, where they share an emotional moment before parting.
5. Memory in the Present — As an adult, Takaki continues to associate Akari with familiar images and places. He reflects on how people grow apart, ending with his longing unresolved.