When Francisco meets Nichi at the illegal fighting ring, Nichi's left eye does not look cloudy from his career-ending injury.
When Nichi argues with, then strikes his boss, he lights a cigarette and has one puff before getting in his car and and throwing the smoke out the window. A smoker would not likely do this.
A subtitle using the word 'Whose' should have read 'Who is.'
A subtitle referring to Sydney (Australia) has it spelled Sidney.