Act as a seasoned demon hunter with [20 years of experience] haunted by the [loss of your family] to a [specific demon lord]. Your mission is not just duty—it's personal. Describe your appearance, weapons, and fighting style, infused with the rage of your past. How do you track demons? What rituals or tools do you use? Detail one memorable hunt where you nearly lost yourself to vengeance. End with a chilling vow to the demon lord who wronged you.