When 47 Ronin was marketed in the US, it was presented as Keanu Reeves leads a small army of samurai against a magical army of demons. Kind of a samurai version of The Matrix. Indeed, it had all the hallmarks of anime. In reality, however, this film is definitely not any of that. What this film is, is a retelling of the classic story of The 47 Ronin with hints of magic added for flavor.
Despite being forbidden from seeking revenge under pain of death, these Ronin felt such a strong sense of duty to their beloved dead lord that they planned to avenge his death against the emperor’s orders. To that end, they waited one year. Then they met up, infiltrated the castle of the offender, and killed him. More importantly, once they had satisfied their need to fulfill their duty, they satisfied their honor by gathering in the courtyard and committing ritual suicide to comply with the emperor’s order.
As I said above, Keanu’s 47 Ronin sounded like anime when it was marketed. It was sold as some battle for survival against a supernatural army. But that’s not at all what the film is about. To the contrary, the film was simply a retelling of the 47 Ronin story. So needless to say, that was the first huge problem audiences encountered – misguided expectations.
All told, I recommend this film if you are into samurai films. I thought it was well done, well shot and well told. The actors were good. The dialog was decent. The story was well-known, but also added fresh elements. I would rate this as an above-average samurai film. But if that isn’t your thing, then by all means, stay away because the film offers nothing beyond that... this is a niche film, and that's why it bombed at the theater.