Koyama's family •
Masataka Kubota as Yūichi Koyama (based on
Yūji Koseki) • Sera Ishida as young Yūichi •
Toshiaki Karasawa as Saburō Koyama, Yūichi's father •
Momoko Kikuchi as Masa Koyama, Yūichi's mother • Takara Sakumoto as Kōji Koyama, Yūichi's brother •
Morio Kazama as Mohei Gōndō, Yūichi's uncle and Masa's older brother
Sekiuchi's family •
Fumi Nikaidō as Oto Sekiuchi, Yūichi's wife (based on Kinko Koseki) • Kaho Shimizu as young Oto •
Ken Mitsuishi as Yasutaka Sekiuchi, Oto's father •
Hiroko Yakushimaru as Mitsuko Sekiuchi, Oto's mother •
Rena Matsui as Gin Sekiuchi, Oto's older sister • Toito Honma as young Gin •
Nana Mori as Ume Sekiuchi, Oto's younger sister • Chise Niitsu as young Ume
Fukushima people •
Ikusaburō Yamazaki as Hisashi Satō, Yūichi's classmate and childhood friend (based on Hisao Itō) • Taiki Yamaguchi as young Hisashi •
Aoi Nakamura as Tetsuo Murano, Yūichi's classmate and childhood friend (based on Toshio Nomura) • Taiga Komie as young Tetsuo •
Naotarō Moriyama as Kiyoharu Tōdō, Yūichi's school teacher
Kitaichi kimono shop • Daichi Sugawara as Takahiko Ōgawara, the owner • Shin Shimizu as Hiroto Kuwata, the shop clerk • Taketo Tanaka as Shizuo Oikawa, the shop clerk
Kawamata people Kawamata Bank •
Kazuyuki Aijima as Gorō Ochiai, a bank branch manager •
Satoru Matsuo as Renpei Suzuki, a bank clerk • Keiko Horiuchi as Shōko Kikuchi, a bank clerk •
Ayumu Mochizuki as Kanda Matsuzaka, a bank clerk
Others •
Mayu Hotta as Suzu
Tokyo people Columbus Records •
Arata Furuta as Homare Hatsukaishi, the company's director •
Yojiro Noda as Masato Kogarashi, a composer (based on
Masao Koga) • Kayano as Akane Sugiyama, the company's secretary
Bamboo • Tooru Nomaguchi as Tamotsu Katori, the owner •
Riisa Naka as Megumi Katori, Tamotsu's wife
Others •
Ken Shimura as Kōzō Oyamada (based on
Kosaku Yamada) •
Ko Shibasaki as Tamaki Futaura (based on
Tamaki Miura) •
Takahiro Miura as Takashi Tanaka • Nozomi Inoue as Fujimaru, a singer (based on Otomaru) • Hayato Kakizawa as Tarō Yamafuji, a singer (based on
Ichirō Fujiyama) • Mayuko Kominami as Chizuko Natsume == Production ==