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Time Traveller: The Girl Who Leapt Through Time (2010) Plot Summary & Timeline

Time Traveller: The Girl Who Leapt Through Time (2010) movie poster

Time Traveller: The Girl Who Leapt Through Time is a 2010 adventure and sci-fi film directed by Masaaki Taniguchi, running 2 hours 2 minutes. This page retells the whole story in 388 words (about 2 minutes to read) and covers 15 key events in order, 5 characters, where and when it is set and 3 themes. Looking for the cast, ratings and where to stream it? See the movie page for Time Traveller: The Girl Who Leapt Through Time.

to read the plot summary
2 min
key events in the timeline
15
characters profiled
5
themes explained
3
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Time Traveller: The Girl Who Leapt Through Time (2010) movie poster
Released
Runtime
2h 2m
Genres
Adventure, Sci-Fi
Original language
Japanese
Studio
Aniplex
No spoilers

What Is Time Traveller: The Girl Who Leapt Through Time About?

The premise of Time Traveller: The Girl Who Leapt Through Time in 300 words, with nothing given away. The full story follows below.

In the summer before university, Akari Yoshiyama watches her life settle into a familiar rhythm—graduation plans, family expectations, and the quiet pride of her mother’s scientific career. Kazuko Yoshiyama, a diligent pharmacologist, has been quietly pursuing a tantalizing breakthrough: a formula that could bend the flow of time itself. When a sudden car accident shatters that fragile equilibrium, the promise of her research hangs in precarious balance, leaving Akari with a choice that feels larger than any exam she has ever faced.

Compelled by love and a fierce sense of duty, Akari accepts her mother’s request to step beyond the present and travel back to the early 1970s. The film’s tone blends wistful nostalgia with a subtle, speculative edge, inviting viewers into a world where the ordinary streets of 1970‑era Japan pulse with the quiet hum of hidden possibility. The era’s warm, sun‑drenched streets and muted color palette create a backdrop that feels both intimate and expansive, emphasizing the emotional stakes of a young woman reaching across decades.

In the past, Akari encounters Ryota Mizoroki, an aspiring filmmaker whose restless creativity mirrors her own yearning for purpose. Their unlikely partnership blossoms as they share dreams, lenses, and fleeting moments of connection, hinting at the ways art can bridge gaps in time. Through Ryota’s lens, the city becomes a canvas where past and future whisper to each other, offering Akari glimpses of herself she never imagined.

A thread tying everything together is Kazuo Fukamachi, the man who once captured her mother’s heart. His lingering presence looms as a quiet promise, a mystery that beckons Akari to uncover the hidden layers of her family’s history. The story balances tender human drama with the intrigue of temporal possibility, leaving the audience eager to see how these intertwined lives might reshape one another’s futures.

Full plot

What Happens in Time Traveller: The Girl Who Leapt Through Time?

The complete story of Time Traveller: The Girl Who Leapt Through Time, from the first scene to the last, in 388 words (about 2 minutes). Spoilers throughout.

Spoilers ahead

In 2010, (/actor/narumi-yasuda) works as a pharmaceutical researcher secretly developing a formula for time travel. After a car accident, she is left comatose. She briefly regains consciousness and asks her daughter Akari Yoshiyama(/actor/riisa-naka) to travel back in time to 1972 and deliver a message to her first love, (/actor/kanji-ishimaru). Akari mistakenly travels to 1974 and befriends (/actor/akiyoshi-nakao), who welcomes her into his apartment while she seeks a way back to her own time.

< Ryota Mizoroki > pursues a dream of becoming a renowned director, and Akari aids in filming a movie with him during their time together. She also meets her father in the past, and the two of them begin to piece together a fragile connection across time. Akari and Ryota place a personal ad for (/actor/kanji-ishimaru) to meet them in the lab where Akari first appeared, hoping for a chance to fix what’s been broken by time.

Yet when the scheduled meeting arrives, Ryota is overwhelmed by grief over his father’s sudden death and cannot appear. Akari delivers the message to (/actor/kanji-ishimaru), conveying that her mother remembers the promise he made to visit her in the future. Kazuo shares with Akari the history he has with her mother. Kazuko had met Kazuo in a middle-school science lab and, by inhaling the fumes of his time-travel formula, gained the ability to jump through brief moments of time. He later erased her memory of him, and now it seems he intends to do the same to Akari.

Akari asks to say goodbye to Ryota, who does not know when she will return to her own time. He bids her farewell in confusion as he heads out on a day trip, and he gives her a silent movie film to keep. Akari soon realizes too late that Ryota is about to board a bus that will crash off a cliff and claim the lives of all aboard. She rushes to intervene, but Kazuo stops her from altering the past and erases her memory of both himself and Ryota.

Returning home, she finds her mother awake and well, and discovers the film she never consciously remembers receiving. Watching it, Akari is moved to tears, even though she cannot name the reason. She then walks into the cherry blossoms, the same scene that appeared in Ryota’s film, stepping forward into a quiet, memory-laden future.

Timeline

Time Traveller: The Girl Who Leapt Through Time Timeline: Every Key Event in Order

15 key events in the order they happen, from “Kazuko begins time travel research” to “A quiet, memory-laden future”. 15 events name a place, across 10 locations.

  1. 1

    Kazuko begins time travel research

    In 2010, Kazuko Yoshiyama, a pharmaceutical researcher, secretly works on a formula for time travel. She pursues breakthroughs in a laboratory, pushing the boundaries of what science can achieve. Her obsessive research lays the groundwork for everything that follows.

    When:2010 Where:laboratory

  2. 2

    Car accident leaves Kazuko comatose

    A car accident leaves Kazuko comatose and halts her ongoing work. The sudden crisis threatens both her life and the secret project she is pursuing. The event acts as a catalyst for the journey that unfolds through her daughter.

    When:2010 Where:hospital

  3. 3

    Kazuko asks Akari to travel back in time

    While briefly regaining consciousness, Kazuko asks her daughter Akari to travel back in time to deliver a message to her first love, Kazuo Fukamachi, in 1972. Akari is entrusted with finding a way to reach the past and return to her own time. The request binds their fates across years and generations.

    When:2010 Where:hospital

  4. 4

    Akari travels to the past by mistake

    Akari attempts to travel to 1972 but ends up in 1974 instead. She begins navigating a new era and seeks a path back to her own time. The unintended shift launches her encounter with Ryota Mizoroki and a life she never expected.

    When:1974 Where:Ryota Mizoroki's apartment

  5. 5

    Akari befriends Ryota Mizoroki

    In 1974, Akari is welcomed into Ryota Mizoroki’s world as he adjusts to a new life abroad. He and his circles show her kindness while she hides her true purpose in the past. Their growing friendship provides emotional support in an unfamiliar time.

    When:1974 Where:Ryota Mizoroki's apartment

  6. 6

    Akari helps with Ryota's film dream

    Ryota pursues a dream of becoming a renowned director, and Akari aids in filming a movie with him. Their collaboration deepens their bond and gives Akari a sense of belonging in the past. The project also becomes a bridge between their lives across time.

    When:1974 Where:various locations around 1974

  7. 7

    Akari meets her father in the past

    During their stay in the past, Akari meets her father and they begin to build a fragile connection across generations. The encounter adds another layer to the time-crossed narrative. This meeting helps Akari understand how past choices echo into the present.

    When:1974 Where:past setting

  8. 8

    They post a personal ad for Kazuo Fukamachi

    Akari and Ryota place a personal ad for Kazuo Fukamachi to meet them in the lab where Akari first appeared. The plan is to re-insert Kazuo into the timeline to repair what has been broken. The ad marks a pivotal attempt to converge past and present.

    When:1974 Where:lab where Akari first appeared

  9. 9

    Ryota cannot attend the meeting

    The scheduled meeting arrives, but Ryota is overwhelmed by grief over his father's sudden death and cannot appear. Akari waits in the lab, unsure of what will come next. The absence unsettles the fragile plan to mend time’s rift.

    When:1974 Where:lab

  10. 10

    Akari delivers the message to Kazuo

    Akari hands Kazuo the message and explains that Kazuko still remembers his promise to visit the future. The exchange reveals the long, tangled history between Kazuko, Kazuo, and Akari. The moment shifts the dynamic of who remembers whom and when.

    When:1974 Where:lab

Show the other 5 events of Time Traveller: The Girl Who Leapt Through Time
  1. 11

    Kazuo reveals his past with Kazuko

    Kazuo shares the history with Kazuko: they met in a middle-school science lab, and breathing in the fumes of his time-travel formula granted her brief jumps through time. He admits that he erased her memory and may erase Akari as well. The revelation raises the stakes for everyone involved.

    When:1974 Where:lab

  2. 12

    Akari says goodbye to Ryota

    Akari asks to say goodbye to Ryota, who does not know when she will return to her own time. He offers her a silent movie film to keep as a reminder of their bond. The farewell underscores the personal costs of time travel.

    When:1974 Where:lab

  3. 13

    Memory erasure and the bus tragedy

    As the moment that could alter the past approaches, Ryota boards a bus bound for disaster. Kazuo stops Akari from altering the timeline and, in the process, erases her memory of both him and Ryota. The past remains intact, but personal memories are sacrificed.

    When:1974 Where:bus stop / lab

  4. 14

    Return home to a restored mother and a discovered film

    Returning to 2010, Akari finds her mother awake and well, and she discovers a silent film she never consciously remembered receiving. Watching it moves her to tears, even though she cannot name the reason. The moment ties the present to a remembered past.

    When:2010 Where:home

  5. 15

    A quiet, memory-laden future

    Akari walks into the cherry blossoms, a scene that echoes from Ryota’s film, and steps toward a future filled with memories she cannot fully name. The ending suggests a hopeful horizon shaped by the moments that slipped through time. She steps forward into what comes next, carrying a delicate repertoire of remembered connections.

    When:future Where:cherry blossoms / future

Characters

Who Are the Main Characters in Time Traveller: The Girl Who Leapt Through Time?

5 characters, among them Akari Yoshiyama (Riisa Naka), Kazuko Yoshiyama (Narumi Yasuda) and Kazuo Fukamachi (Kanji Ishimaru): who each one is and the part they play in the story. Every profile links to the actor’s page.

  • AY

    Akari Yoshiyama (Riisa Naka)

    Played by Riisa Naka

    A resourceful young woman who travels back in time to 1974 to deliver a message from her comatose mother. She navigates a different era, forms a bond with Ryota Mizoroki, and helps film a movie with him, all while trying to return to her own time. She also meets her father in the past, and she must confront how memory and time shape who she becomes.

    • 🧭 Protagonist
    • ⏳ Time traveler
    • 💞 Family-driven
  • KY

    Kazuko Yoshiyama (Narumi Yasuda)

    Played by Narumi Yasuda

    A pharmaceutical researcher in 2010 secretly developing a time-travel formula; after a car accident she falls comatose and entrusts Akari with a mission to reach Kazuo in the past. Her drive to understand time births both the possibility of travel and the risk of memory loss across generations. Her past and present memory weave the central motivation for the story.

    • 🧬 Scientist
    • 🧠 Memory
    • 💗 Mother
  • KF

    Kazuo Fukamachi (Kanji Ishimaru)

    Played by Kanji Ishimaru

    The man connected to Kazuko from their middle-school science-lab encounter; he is tied to the origin of the time-travel formula and becomes a gatekeeper who erases memories to preserve a fixed timeline. His actions drive the plot’s tension, as he seeks to control how time is remembered or forgotten. He embodies the ethical tension of reshaping history for personal motives.

    • 🧭 Time shaper
    • 🧠 Manipulator
    • 🕳️ Memory guard
  • RM

    Ryota Mizoroki (Akiyoshi Nakao)

    Played by Akiyoshi Nakao

    An aspiring director who welcomes Akari into his apartment and collaborates on making a film during their time together. He pursues a dream of creative achievement while navigating personal loss—the death of his father. The project and their bond become a catalyst for memory and meaning across the timelines.

    • 🎬 Director-in-training
    • 👨‍👦 Creative
    • 💡 Dreamer
  • YK

    Young Kazuko Yoshiyama (Anna Ishibashi)

    Played by Anna Ishibashi

    A younger version of Kazuko who appears in the middle-school era, hinting at the roots of Kazuko’s time-travel abilities and the early interaction with Kazuo that seeds the later events. This younger incarnation provides a glimpse into the origins of the memory-tinged connection between past and present.

    • 🧒 Young
    • 🧬 Scientist
Setting

Where and When Is Time Traveller: The Girl Who Leapt Through Time Set?

Time Traveller: The Girl Who Leapt Through Time is set in Japan (2010s and 1970s (1972–1974)). Here is why the time and place matter to the story.

When

2010s and 1970s (1972–1974)

The narrative switches between 2010, where a scientist pursues time-travel research, and the past years (roughly 1972–1974) that Akari visits. Akari's mistaken trip to 1974 and the events surrounding Kazuo and Kazuko span these decades, weaving memory and fate across time. The film uses these dual timelines to explore how moments echo forward and how memory can both connect and erase across eras.

Where

Japan

The story unfolds across Japan, moving from a contemporary 2010s laboratory to a 1970s past filled with apartment life, school labs, and quiet neighborhoods. Key locations include a high-tech pharmaceutical research lab where time-travel ideas originate and a series of intimate, memory-filled spaces like Akari's apartment and a middle-school science lab. The visual contrast between the modern era and the past, punctuated by cherry blossoms, underscores the emotional stakes of memory and lineage.

  • 🗺️ Japan
  • ⏳ Time travel settings
  • 🌸 Past & present
Themes

What Are the Themes of Time Traveller: The Girl Who Leapt Through Time?

3 ideas the story keeps returning to, among them Time & Memory, Connections Across Time and Creativity & Destiny.

  1. 01

    Time & Memory

    Time travel in the story hinges on memory as much as mechanism, showing how moments linger and reshape identity. Characters confront the consequences of revisiting the past, including the risk of erasing memories. The plot centers on the fragile links that bind generations, and how memory can be both a doorway and a trap.

  2. 02

    Connections Across Time

    The mother-daughter bond and the cross-generational link between Kazuko and Akari drive the emotional core of the film. Akari's interactions with Ryota in the past blur temporal boundaries, highlighting how affection and obligation persist beyond time. The past serves as a canvas for understanding family ties and reconciliation.

  3. 03

    Creativity & Destiny

    Ryota's dream of directing a film mirrors the characters' attempts to script their own futures, using art as a vehicle to communicate across decades. The cinematic elements—filming with Ryota, the silent film he leaves behind—become vessels for memory and meaning. Time itself becomes a narrative device, shaping what can be saved, what must be remembered, and what might be lost.

Tone & mood

What Kind of Film Is Time Traveller: The Girl Who Leapt Through Time?

Melancholic in tone, with steady pacing and a moderate story, going by the plot summary.

Tone
Melancholic
Pacing
Steady
Story
Moderate
Intensity
Medium
Ending
Bittersweet

A wistful and tender journey through time that explores the bittersweet nature of memory and connection, leaving the viewer with a lingering sense of poignant nostalgia and quiet acceptance.

  • nostalgic
  • yearning
  • thoughtful
  • tender
  • melancholic
  • romantic
  • time travel
  • fate vs free will
  • grief and loss
  • unfulfilled love

Content notes: car accident, fatal bus crash, memory manipulation.

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FAQ

Time Traveller: The Girl Who Leapt Through Time Plot Questions

5 quick answers about Time Traveller: The Girl Who Leapt Through Time, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is Time Traveller: The Girl Who Leapt Through Time about?

In the summer before university, Akari Yoshiyama watches her life settle into a familiar rhythm—graduation plans, family expectations, and the quiet pride of her mother’s scientific career.

Read the full plot summary

When and where does Time Traveller: The Girl Who Leapt Through Time take place?

Time Traveller: The Girl Who Leapt Through Time is set in Japan (2010s and 1970s (1972–1974)). The narrative switches between 2010, where a scientist pursues time-travel research, and the past years (roughly 1972–1974) that Akari visits.

The setting explained

Who are the main characters in Time Traveller: The Girl Who Leapt Through Time?

The story follows Akari Yoshiyama (Riisa Naka) (played by Riisa Naka), Kazuko Yoshiyama (Narumi Yasuda) (played by Narumi Yasuda), Kazuo Fukamachi (Kanji Ishimaru) (played by Kanji Ishimaru) and Ryota Mizoroki (Akiyoshi Nakao) (played by Akiyoshi Nakao); the character guide covers 5 characters in all.

All the characters

What are the main themes of Time Traveller: The Girl Who Leapt Through Time?

The summary picks out 3 themes: Time & Memory, Connections Across Time and Creativity & Destiny.

The themes explained

Who directed Time Traveller: The Girl Who Leapt Through Time?

Time Traveller: The Girl Who Leapt Through Time (2010) was directed by Masaaki Taniguchi and runs 2 hours 2 minutes.

Masaaki Taniguchi’s films

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