Halfway through the film I was wondering if it was based on some graphic novel. It is a typical revenge tale but they do as much as they can to spice it up. For example, everyone in this film knows that assassins exist and they all are like some club. They have their own hotel and even the neighborhood cops know who they are. Funny enough, but they are accepted almost like handymen.
Anyway, yeah it seems like The Equalizer or Taken, but I'd definitely watch this rather than those two. The action choreography is fantastic.
Que, he also directed a martial arts film which wasn't bad (Man of Tai Chi). Was also in a film called 47 Ronin. I think you would like 47 Ronin since you are interested in Japanese culture and it has some nice visualization of Japanese fantasy stuff. But yeah, watch this first.