Zebra

Dora and associates run a badger game scheme to extort victims out of money. One day, though, their target looks like an ordinary guy, but he turns out to be a yakuza. Dora and his associates fall into a far darker world. Dora steps into a business that offers to take revenge on others by any means necessary.
(Source: TMDb)
~~ Adapted from the manga series "Shimauma" (シマウマ) by Obata Fumio (小幡文生).