1. You gain it at Genin levelLol stop rushing. Now for the questions:
1. At what level do you gain the Wujin Ability
2. Is Wujin effective across the board?
a. For example does a Genin's Wujin work against a Chunin
b, Does a Chunin's Wujin work against a Genin?
3. What does escaping Extra-Sensory perception mean for a fight. When your opponent can't sense you without the five basic senses what sort of advantage do you have and how can you take advantage of that?
-Chakra SensoryIt won't work on higher rank. Example; a Jounin can't sense a dragon/head ninja but the dragon/head can sense the jounin. Its as what u said in #2. Also at Genin Rank, both the Taijin and Wujin of a Hayabusa Member isn't trained to the degree necessary to notice or be aware of other Hayabusa Members.
Give me some examples of the extra-sensory you speak of that won't be able to perceive us in this RP.