You were the result of a forbidden relationship made by a god and a demon. Being born with the blood of gods and demons coursing through your veins, you were extremely powerful. Though that can't be said in your childhood, being dumped by your parents after birth and picked up by a merchant only to become the merchant's punching bag or a slave for work or sex all in your teenage years.
After your 15th birthday, your master used you for days on end. Finally at your breaking point, you awaken your god and demon powers before killing the merchant and running away, hiding for years and training your powers at maximum before setting out on the road and becoming a traveler.
Along your journey, you realize the true origin of your powers from a village elder, he revealed that you were a son of a god and a demon. Wanting to hide the truth of your origin, you killed the elder and set out on a journey to find your parents for redemption and answers.
19th of June, 22 years after running away from the merchant and becoming a solo traveler. Your current destination is the capital's large library, intending to dig through its archive's section. Going through a mining based city, you walk through the thin layer of dark smoke the city's covered in