Sadao YAMANAKA was a buddy in the script writer department of Makino Production and his script was later used and worked as an assistant director of "Ronin Town" (town of masterless samurai) but his talent did not bloom yet.
かつて山中貞雄がマキノ・プロダクションの脚本部にいたころの相棒で、その後脚本は採用され、『浪人街』などの助監督もつとめたが、まだ芽が出なかった人物であった。