Iron Will

 is a weapon in SINoALICE.

Weapon Story
A blade unearthed from the wasteland. Too big to be called a sword, too heavy to fight with, too ugly to be cermonial. What was it for? It left the archaeologists scratching their heads.

When they researched the site where the blade was dug up, and referenced documents from the same time period, they came upon a story about the blade. The knight who had owned the blade had single-handedly wiped out two whole enemy kingdoms.

They analyzed the blade to find out what it was made of, and to their surprise, they found it contained not only steel, but also human blood and bits of bone. The archaeologists believed the blade had been made of the weapons and bodies of dead men, to serve as a warning against war.

War broke out, and the archaeologists found out the tale was true. The knight appeared in the storeroom where the blade was kept, exactly as the ancient documents described him. He claimed to represent the legion of souls that resided in the sword. They would never rest, explained the knight, until humanity realized the foolishness of war.