Rensa (chain) is the Seventh and final Kengiryu, as well as the hardest to learn. it's usage, unlike the others, is tactical, rather than explicitly offensive or Defensive, and the subsequent lack of obvious function, compounded by the great difficulty of mastering it, makes it very rarely practiced and obscure. To implement it, the user must pull their sword quickly backwards during a swing, as well as employing aspects of the flying slash tehcnique. the result is a current of air drawn towards the user, much like a chain or rope. It is very rarely useful, except for those with extreme strength and/or skill. It has been revealed to be useful in aiming compressed air blades precisely, and even causing them to fly like boomerangs. It has also been used to retrieve thrown weapons such as kni