Ikisosō Tei

Ability
With the activation of this Fuinjutsu, the user erects an invisible barrier around themselves that corresponds with the seal that is upon their body. Upon activation, it has a radius that can stretch up to a total of sixteen feet. The seal recognizes the user's chakra and doesn't affect said person, but it affects both friends and foe alike. All those that are within the radius of the seal start to suffer physical exhaustion.

The seal acts like a human's immune system, recognizing the user's chakra as what needs to stay and foreign chakra is what needs to be pushed out. Because of this, the seal is constantly attempting to 'push' that chakra out of it's circle and although while it doesn't do anything physically to those within it, it causes a strain upon the chakra system and therefore leads to the physical drain upon the target(s).

Due to this seal attacking chakra networks, the larger that one's chakra pool is, the larger the target of the seal and therefore the faster and larger the amount of physical strain that is inflicted upon said target(s).