This is a technique where the user encases themselves in a countless number of sharp needles, but in truth, the spikes are the user's hair. Chakra grants the strands of hair the hardness and shape of needles, endowed with a capacity to injure and kill on par with that of metallic weapons. In addition, if activated in response to an opponent's attack, it can also be used as a counter. The hair is made hard enough that it can withstand blows from certain types of weapons such as arrows.
Jizō (地蔵) is the Japanese name of the Bodhisattva Ksitigarbha. He is considered to be the guardian of children and travellers and the saviour of those who have to suffer in the underworld.