Hirayama works as a public toilet cleaner in Shibuya, Tokyo. He wakes up at the same time every morning, gets ready for the day, waters his plants, and drinks canned coffee while working. He listens to music on cassette tapes and buys used books to read. His tranquil days seem to repeat the same routine.
This homeless man, who gave up everything, lives in a park in Yoyogi Fukamachi. He occasionally reaches out into the sunlight. There is something solemn about him that inspires mild respect from Hirayama.
Hirayama’s niece. After an argument with her mother, she leaves her home in Kamakura and comes to visit Hirayama for the first time in over a decade. When she was little, she felt that Hirayama was the only one who understood her.
Hirayama’s co-worker. A rather exasperating man whom Hirayama finds somewhat hard to dislike. Takashi is constantly grumbling about not having enough money, which he blames on the world. Recently, he has developed a crush on Aya.
Aya works at a bar where her job is to drink and chat with customers. She neither likes nor dislikes Takashi. She lives in her own world and goes through life without expecting much of anything from others.
Hirayama’s younger sister and Niko’s mother. She lives in luxury near her parents’ home in Kamakura. When her father and brother quarreled, she was unable to do anything about it. Although she feels guilty for this, she has been unable to go see her brother in over a decade.
Started running her pub in Asakusa a long time ago after getting divorced. Lately, she manages to get by thanks to a few regulars. She is fond of Hirayama, but she thinks that she is too old for that kind of thing now.
Mama’s ex-husband. He remarried soon after the divorce. He and his second wife have a child. When he gets sick, he begins a short journey to revisit his past and comes to meet his ex-wife.