The Obsidian Viper

The Obsidian Viper was an infamous thief known for robbing noble estates, who seemingly disappeared a decade in the past. It was presumed that they were dead or retired, but rumours have circulated that the thief has returned to the city.
The Viper's identity was always hidden behind a mask, but it is said that she was a woman, clad in black clothes, robes with a red trim, and carries a "fencing sword."