Oh.... So *that* is what you call a lunge punch. Let me say this... First it is usually footwork accompanied by a punch, not the other way around.
Secondly, I don't believe that example was a good example of a punch. Just my opinion. Overall I thought the demo was fine, but since you are using it as an example for a punch, I wanted to point out, that the punch was not the best part of the demo by far, in my opinion.
To truly answer your question, you should go to a Bujinkan dojo and train. I just don't think you are going to find what you are looking for online because they are all training demonstrations not actual fights at normal speeds.