It appears to be Wing Chun, but the speed is reminicent of krav magra. I actually have no idea what it is but I would assume it is an invented style, such as Chuck Norris' Chun Kuk Do, although, come to think of it, using everything, even the body as a weapon and the high potential for a speedy KO is what krav maga is about..
that being said, invented styles are just a persons own mix and take on differing styles, so therefore they can be highly effective, such as said style of chuck norris who has a highly successful martial arts career. Unless they are a total crackpot and just throw backyard wrestling moves together that have no rhyme or reason.. but this guy seems to have some good ideas so i would not write it off as some others aeem to have.
Holy Crap, you mean Choson is still putting out videos? LoL. First, it is not ninjutsu. He tried to label his art as ninjutsu at the beginning but was so torn apart by people on martial arts planet and I think bullshido that not only did he change the name to something else, he also made a video apology.
The name of the art is crapjutsu. To me it seems like he just took some martial arts (more specifically tae kwon do mixed with some karate and some really bad jujutsu) and invented his own art that he tries to pass off as legit. Come on, his main dojo is utube! It's almost as bad as Dan Bowen and the Sacred Fire Dojo, also on you tube. If you want a good laugh sometime, check out the videos.
If you want to get owned in a fight, study this "art". If you want to study something real, get your butt to the dojo, shibu, dojang, or gym.