Jiro is Kihachi's younger co-worker at the brewery, a man in his thirties who initially treats the destitute young woman as trouble. Although he rejects marriage, he secretly seeks a loan for Tomio's medical expenses and plans to work in Hokkaido, prompting Kihachi to interfere.
Kenji is one of two friends who travel to Hokkaido after signing on as a miner. He meets Ohama and her daughter aboard the ship, and later protects Ofuji from an importunate sailor. After Chuko dies in a mine collapse, Kenji fights with Guzuyasu, wounds him, and hides with Ofuji before they escape by boat.
A popular young teacher at the Christian girls' school, he recognizes Keiko's artistic talent and becomes closely involved in her education. He rejects the suggestion that he marry Hashimoto's daughter, and when Hashimoto proposes that he marry Keiko to save her, he says he would consider it only from a teacher's sense of responsibility.
Mizuhara is a Tokyo student vacationing on the Izu peninsula who befriends Eikichi's travelling musician group and falls in love with Kaoru. He confronts the mine's new owner over an exploitative proposal and later urges Kaoru to pursue a stable married life before returning to Tokyo.
Den Obinata has 45 screen credits in a career dating back to 1932. Their work is anchored in the G-men of Japan Collection universe with 1 titles. Signature works include Nocturnal Gate, Children of the Sun, Bouquet of the South Seas. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.