Staff of Insanity

 is a weapon in SINoALICE.

Weapon Story
The judge had not a smidgen of warmth in his heart.

He received pleasure in life by passing judgment on criminals.

One day, he handed down judgment on the eldest of many brothers.

He was seen breaking and entering, and caused bodily harm while resisting arrest.

The younger brothers' long struggle finally ended when they died while waiting for their older brother to return.

The brother was in tears. "I'll do anything. Just let me go, please! I have ten brothers at home who are starving to death as we speak."

"Then kill one of them," the judge replied.

"That's better than all of them dying, isn't it?"

The judge viewed his sentence as merciful.

The next day, when the brother returned with the head of the ninth brother, the judge charged him with murder. His intention from the start was to execute the boy. His sentence hadn't contained the slightest semblance of mercy after all.