After Rebirth, I Gave up My Spiritual Beast to My Junior Sister

On the day when the sect selected the spirit beast cubs, the junior sister snatched the black dragon that was originally given to me. Just because it is the number one spiritual beast in the world that can transform into a dragon. In my previous life, I was the Contract Master of the Black Dragon. During the competition in the sect's secret realm, the Black Dragon actually pushed me into the mouth of the Flame Beast in order to save my junior sister. Only then did I realize that his preferred deed owner was never me. When I opened my eyes again, I picked up the puppy that was disliked by my junior sister. My uncle advised me: "This is just an ordinary little white dog. Even if it barely takes shape, it will drag down your cultivation. It's better that you wait for something else." He didn't know that the day Xiaobai transformed into a human being would be the day when all the beasts bowed their heads.