"We're all just grains in the desert that is life..."

Hezul and Taitus are very distinct twin brothers and the sons of a wealthy sheikh out of the desert state.
Out of jealousy, anger and since Hezul's white hair and Taitus' fair skin were considered a bad omen among the people, their father abandoned the brothers and left them in the deserts exile to die. But the two found a way to help themselves, survived and were eventually picked up by a vagrant who trained them to be successful assassins. Meanwhile their names are feared throughout the country.
Hezul is blind and therefore relies entirely on his extremely good hearing and other senses.