A deceased friend of Kazu who is remembered for his intelligence and kindness, with a particular fondness for his stray cat, Emile. He shares historical stories and personal struggles, but the full details of his life remain hinted at rather than fully revealed.

Kazu's affectionate and caring granddaughter, who briefly takes him in after Setsuko's death. Her life is touched by tragedy, and her choices showcase her selfless nature, even when faced with dangerous situations.

Kazu's wife, who mainly appears in the narrative as the dedicated mother of their children. She lives a life serving others, and her sudden death deeply impacts Kazu, affecting his emotional well-being and sense of guilt.

Nameless individuals whose trivial conversations serve to contrast with the heavier themes of Kazu's life. They embody scenes of everyday life that highlight class disparities and provide transitions in the narrative.