Piercing Arrow Strike

Piercing Arrow Strike is one of the first ninjutsu's developed by Senku Agari. To use, he would cover his Senbon with his chakra. Then, causing them to take the shapes of multiple luminous thorns floating in close proximity to its person, which are used to viciously impale victims and can pierce the body of a Kage level Shinobi at ease. By increasing the amount of chakra used, the number of thorns also increases. All of the thorns are shot by aiming at the enemy's vital spot which can lead to a very painful death. In addition, the senbons are controlled one by one with chakra, so avoiding them all is extremely difficult.

However, this technique is only used as a medium for Senku's most feared ability.