Kazuo Kasahara (笠原 和夫, Kasahara Kazuo; 8 May 1927 – 12 December 2002) was a Japanese screenwriter particularly known for his work in the yakuza film genre. He was born in the Nihonbashi area of Tokyo and dropped out of Nippon University.
Source: “Kazuo Kasahara”, English Wikipedia (CC BY-SA 4.0), excerpt