Blackfox or Black Fox is something unusual, seemingly suffered from some troubled production issues it stands somewhere between being a backdoor pilot for a potential series or part of a series condensed into a single 90-minute movie. While some of this might have hurt the film in the end, it didn't detract too badly from the enjoyment and entertainment factor behind it.
Blackfox is light on story, there are obviously chunks of story missing. It's a shame on that end because this does have so much good potential and that potential may rest with ultimate success of this film.
What it really has going for it, are some exciting and stylish action sequences sprinkled throughout, you'll be hard press to not be entertained by the various action scenes sprinkled out through this film. Best part it is, it shows rather than tells like many in the action genre of anime fall to.
Blackfox is pretty much on par with most Marvel movies this day and age and if you can enjoy those movies you can certainly enjoy this.