With this power, I will have an adventure in a cultivation world

After suffering a premature death, our protagonist ends up inside a dark place with no one around, whose only fun was to review his life over and over again, thus the years passed before he noticed that even his soul was about to disappear, so , accepting his life and facing his death, he manages to ascend as a soul and is transported to a strange place.
On the verge of disappearing completely, a mysterious character appeared, who asks him for a favor, in return, he would save him and grant him the power he desires. which our protagonist accepts and reincarnates in the body of a baby in a prestigious family.
What will it bring to our protagonist? Who will be the mysterious character who saved him and gave him power?
Follow his adventure as our protagonist explores this new universe while he discovers that he may not have arrived in that world by chance.