Takeshi Kitano’s Brother (2000) blends Japanese Yakuza cinema with American gangster grit, following a displaced gangster who rebuilds his criminal empire in Los Angeles with a new brotherhood of misfits. Brutal, melancholy, and darkly poetic, it’s a cross-cultural Crime Drama and Thriller about loyalty, alienation, and the cost of violence — a signature Kitano fusion of stillness and sudden bloodshed.

Takeshi 'Beat' Kitano directs and stars in this brutal crime thriller about a Japanese yakuza forced to flee to Los Angelesafter the death of his boss. 

In the wake of a failed gang war, Yamamoto ‘Aniki’ (Kitano) arrives in Los Angeles with nothing but a new name and a bag of cash.  Re-uniting with his younger brother, he uses his extensive experience as a hardened gangster, to grow a small-time drug operation into an far-reaching criminal brotherhood, attracting the attention of rival gangs with bloodthirsty consequences.

Widely considered to be Japan's most important and influential director since Akira Kurosawa, Brother marks Takeshi Kitano’s English language debut.

Från IMDB:
A Japanese gangster is exiled to Los Angeles where his brother lives with a small but respectable multi-racial gang, who he inspires to expand their influence.