In the MCU/Marvel with the Omnitrix/Ultimatrix - Chapter 17: Well... That was something

Gu Heng traveled through twenty years, and the garbage system ruined his life. There was no hope for cultivation, and he could only be a small mortal. Although he is a mortal, he must do good things. He helped a poor girl casually, and she became the “Snow White Sword Fairy” who was famous in the three realms in the future. He picked up a seriously injured little wild cat and raised it for a long time, but suddenly found that his pet had become the “Ten Thousand Demons Venerable”. He taught a young alchemist hand in hand, and unknowingly refined the “Ten Thousand Medicines Saint Hand”. He recognized a thin female apprentice, and eventually accidentally refined the “Ancient Emperor”. Gu Heng: None of this has anything to do with me, I am only mortal. Everyone: Stop arguing, they all say that you are the only emperor saint teacher in the world! !

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

Standing before you are:

Guardian and patron of darkness,

Disruptors and Reshapers of Order,

creator and persecutor of licking dogs,

The tea master, the goddess of the dark night, the nightmares and gravediggers of the gods,

The true ancestor of blood – Charlotte de Castel.

With madness, with blood, with curse, with destruction.

This is a legend belonging to the blood family…

- Description from novelbuddy

Liu Ming, since he was young, lived in a savage prison named Savage Island where the prisoners aren’t controlled by any guard or security. When the island sinks due to “mysterious” events, only a handful of people survive – those survivors are then pursued by the government.

On the other hand at another place two practitioners are worrying about what will happen to them because the young master that they were supposed to protect had died.

Their young master looks nearly like our MC
What will happen?