This is the first step in the development of one of two ‘final iterations’ of the construction based martial arts that began with the Bakusai Tenketsu. That technique worked in inanimate solids, and the follow up Seirensho Tenketsu worked on liquids, leading to a third hypothetical evolution of the Tenketsu that works on gases. However, it becomes exponentially more difficult to project stable ki into a gas than it does a solid or liquid. This technique projects an invisible aura of ki into the air, allowing for the use of the Urakaze Tenketsu. It also (similar to the lateral line of a fish in the water) allows the user to feel vibrations and movement through the air.