Rainy Dog (Gokudô kuroshakai) is a Japanese movie directed by Takashi Miike. Although the movie contains a fair amount of controversial material, the overall theme of the movie is place on the unlikely relationships formed between a hitman and his girlfriend / hooker and son.

This movie is the second part of the Black Triad trilogy.

The film begins with the main character, Yuuji, being fired from his yakuza syndicate. Soon he finds work for another boss solely as a pay-per-hit assassin, killing members of other syndicates. His life starts to become more complicated when an ex-girlfriend or hooker drops his son off at his house. His son, who is mute, begins to follow him, where the boy watches him shoot a man who is having lunch with his wife and infant son. Afterward, the boy follows Yuuji to a whorehouse where he waits outside. While waiting, he eats food from the garbage and befriends a puppy who is chained in the alley.

The prostitute and Yuuji develop a live-in relationship (possibly by contract with her procurer). Things get much more complicated when the brother of Yuuji's recent victim, a lawyer, approaches his brother's yakuza syndicate to request heading the revenge attack on Yuuji. The mark's brother discovers the relationship between the hooker and Yuuji and augments her website to offer a reward for anyone with information about her. Yuuji, girlfriend, and son are on the way out of town when Yuuji calls his new boss to get a passport.

Thomas Alan "Tom" Waits (born December 7, 1949) is an American singer-songwriter, composer, and actor. Waits has a distinctive voice, described by critic Daniel Durchholz as sounding "like it was soaked in a vat of bourbon, left hanging in the smokehouse for a few months, and then taken outside and run over with a car." With this trademark growl, his incorporation of pre-rock music styles such as blues, jazz, and vaudeville, and experimental tendencies verging on industrial music, Waits has built up a distinctive musical persona. He has worked as a composer for movies and musical plays and has acted in supporting roles in films including Paradise Alley and Bram Stoker's Dracula; he also starred in the 1986 film Down by Law. He was nominated for an Academy Award for his soundtrack work on One from the Heart.

Lyrically, Waits' songs frequently present atmospheric portrayals of grotesque, often seedy characters and places—although he has also shown a penchant for more conventional ballads. He has a cult following and has influenced subsequent songwriters despite having little radio or music video support. His songs are best-known through cover versions by more commercial artists: "Jersey Girl", performed by Bruce Springsteen, "Ol' '55", performed by the Eagles, and "Downtown Train", performed by Rod Stewart. Although Waits' albums have met with mixed commercial success in his native United States, they have occasionally achieved gold album sales status in other countries. He has been nominated for a number of major music awards and has won Grammy Awards for two albums, Bone Machine and Mule Variations. In 2011, Waits was inducted into the Rock and Roll Hall of Fame.

Takashi Miike (三池 崇史, Miike Takashi^?, born August 24, 1960) is a highly prolific and controversial Japanese filmmaker. He has directed over seventy theatrical, video, and television productions since his debut in 1991. In the years 2001 and 2002 alone, Miike is credited with directing fifteen productions. His films range from violent and bizarre to dramatic and family-friendly.

Miike was born in Yao, Osaka, Japan, an area inhabited by the working class and immigrants. His family was originally from Kumamoto Prefecture. During World War II, his grandfather was stationed in China and Korea, and his father was born in Seoul. His father worked as a welder and his mother as seamstress. Although he claimed to have attended classes only rarely, he graduated from Yokohama Vocational School of Broadcast and Film (Yokohama Hoso Eiga Senmon Gakko) under the guidance of renowned filmmaker Shohei Imamura, the founder and Dean of that institution.

Miike's first films were television productions, but he also began directing several direct-to-video V-Cinema releases. Miike still directs V-Cinema productions intermittently due to the creative freedom afforded by the less stringent censorship of the medium and the riskier content that the producers will allow.