They Say Nothing Stays the Same

Toichi brings the girl aboard his boat after seeing her floating in the river, driven by a basic instinct to help someone in need. Despite the village's rumors about a missing girl and potential danger, he cannot leave her to die. His decision reflects a growing desire to become someone who helps others, which later becomes explicit when he tells the girl about Nihei's father and expresses his vow to live a life of service.

Toichi's protective action sets up his later vow to become a person who helps others.

The river ghost appears as a supernatural presence that watches over the river and knows Toichi intimately, claiming 'I know you well.' It reveals knowledge about the girl's fate, that she should have died but was saved for a future life, and warns that she will torment Toichi. The ghost seems to represent the boundary between life and death, and carries knowledge of past events that Toichi feels guilty about.

The ghost's early appearance and its claim of knowing Toichi foreshadow its later revelations about guilt and the girl's true nature.

The bridge represents the end of Toichi's way of life, as a ferryman, he loses his purpose when people can cross by land. While villagers celebrate the progress, Toichi feels his identity and livelihood being threatened. His conflicted feelings manifest in a disturbing daydream where he and Genzo kill people crossing the bridge, revealing his unconscious resistance to change.

This conflict builds toward Toichi's psychological break and the violent events that follow.

When the girl finally reveals her name is Foo, it marks a rare moment of connection between her and Toichi. This occurs during a peaceful day on the boat when she smiles and swims in the river, her only display of joy in the film. The name personalizes her and breaks her silence, creating a brief warmth in Toichi's lonely life before the story turns darker.

This moment of connection foreshadows their final escape together.

The girl vanishes one night without explanation, leaving the riverbank silent. She later returns to Toichi's hut, and when he asks if she has anywhere to go, she shakes her head. Her movements seem tied to supernatural forces rather than human choice, and her return suggests she is bound to Toichi in some way the ghost later explains, saved for a future life that involves him.

The ghost later clarifies she was meant to die but was saved for a purpose connected to Toichi.

When Toichi returns from crossing the completed bridge, he finds Genzo murdered in his hut with his throat slit. The film does not explicitly show who killed Genzo, leaving this ambiguous. Toichi then lights a fire in the hut and escapes with Foo on his boat into the river, leaving the community and his old life behind.

Genzo's earlier plan to destroy the bridge and his suspicious visit to the hut when Toichi was supposedly away set up this violent climax.

The ghost reveals that the girl should have died on the night Toichi found her, but it 'took her life and saved her for a future life.' This cryptic warning suggests the girl is caught between worlds, alive but not truly living. Her presence brings inevitable consequences to Toichi, culminating in the violent events that destroy his home and force him to flee.

This warning precedes Genzo's murder and Toichi's final escape.

Toichi has a disturbing daydream where he and Genzo kill villagers crossing the bridge while the river ghost watches. This dream reflects Toichi's deep psychological conflict about the bridge, he fears losing his purpose as a ferryman and resents the progress that will render him useless. The violent imagery expresses his unconscious rage and fear of obsolescence.

This psychological tension builds toward the film's violent climax.

During a heavy rain, Nihei's father dies and asks Toichi to carry his body to the forest, fulfilling a dying wish. Toichi rows through the night to complete this act of service, which profoundly affects him. Afterward, he tells the girl he wants to become someone who helps others like Nihei's father, this moment transforms his perspective and motivates his later choices.

This act of service directly inspires Toichi's vow to help others.

Toichi escapes with Foo by boat as the hut burns behind them. The film ends ambiguously with their boat sailing down the river, flames illuminating the water, and their future left unresolved. They flee into uncertainty, leaving behind Toichi's home and way of life, the bridge has ended his purpose, and now he embarks on an unknown path with the mysterious girl.

This ending reflects the film's themes of change, loss, and the uncertain future facing those left behind by progress.