Wind Sensing/ Air Sensing is an unique form of sensory-technique. Since, Ryūken can manipulate wind around him and control air pressure, he can disperse air around him and when bodies come in contact with air or inhale it, he is able to discern them regardless of how distant they are from Ryūken. As it is air, it is impossible for enemies to deduct that Ryūken is able to feel their presence. Any sudden change in the velocity of wind and change in air pressure would notify him, Ryūken can essentially track the whereabouts of objects that he wants to. This being a passive technique is said to be always activate and yet takes a little to no amount of chakra. If so he could setup controlled areas of air that coming into contact with would immediately alert him. But addition to simply chakra, i