Shisōshujō

The Shisōshujō (思想衆生, Thoughts of Sentient Beings), also known as the Shujōheikishū (衆生兵器集, Sentient Weapons Collection), are a set of powerful and sentient, living weapons created by a legendary blacksmith. Consisting of ?? unique weapons, they are said to be so powerful that they rival the.

Background
Being that these unique weapons were created for the intention of founding a powerful group of ninja swordsmen, similar to the present day, that idea was for naught as the village they were intended for was destroyed before the group could be formed. Due to the absence of the blacksmith from the village at the time of destruction, all the weapons were spared from certain destruction.