Kagenui

Literally "shadow stitching", a technique said to have been used by ninja in medieval Japan.

The technique involves "stitching" the target's shadow into the ground using shuriken or kunai, fixing the target to the spot.

Vamp used his throwing knives to perform this technique.

Kagenui actually places the target of the attack in a hypnotized state, creating the illusion that they cannot move.