Black Box Ni 2009-2010 Black Box Ni Following up on Black Box Ichi, this second black box is the core of the performance Black Box Ni (ni means 2 in Japanese). The principle is identical to Black Box Ichi, a black box device connected to a series of input and output peripherals, including a human. One of the peripherals is a robotic paintball gun. Robotic gun in action during Black Box Ni performance. Some of the peripherals for Black Box Ni.