After My Companion System Was Stolen, I Became the Master of the World

I am Jin Jiao, the daughter of a time traveler. With a system and great luck, he is just waiting to be selected by the Immortal Lord to become a war beast and shine on the Jiao Clan according to the plot. But on the day the Immortal made the spiritual contract, the spiritual contract expired and I became a mortal. The Immortal angrily cursed me as a bastard Jiao who steals people's luck. My brother's black dragon's luck condensed into purple energy, and he formed a spiritual contract with the Immortal Lord. And I had my scales pulled out, thrown into the wilderness, and defiled by evil monsters! The Immortal Master crushed my inner elixir and made a tonic soup for my brother. My father beheaded me with his own hands, and my body was hung on the city wall for three thousand years as a warning to others! But until my death, I still don't understand why my brother has become the destined battle beast of the Immortal Lord, even though it's me who possesses the system and carries the destiny. When I opened my eyes again, I went back to the day before I made the spiritual contract. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.