Bunta Sugawara was a Japanese actor who appeared in almost 200 feature films. Dropping out of Waseda University, he worked as a model before entering the film industry in 1956. After years of work, Sugawara finally established himself as a famous actor at the age of 39, with the lead role of Shozo Hirono in the Battles Without Honor and Humanity series (1973–1976) of yakuza films. He quickly found additional success starring as the truck driver Momojiro Hoshi in the comedic Torakku Yarō series (1975–1979). In 1980, Sugawara won the Japan Academy Prize for Best Supporting Actor for his role as a detective in the satirical Taiyō o Nusunda Otoko (1979).

Battles Without Honor and Humanity , also known in the West as The Yakuza Papers, is a Japanese yakuza film series produced by Toei Company. Inspired by a series of magazine articles by journalist Kōichi Iiboshi that are based on memoirs originally written by real-life yakuza Kōzō Minō, the films detail yakuza conflicts in Hiroshima Prefecture.