Takarakuji de 40-oku Atattandakedo Isekai ni Ijuu Suru - Chapter 21

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

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?

When humans step into the Galactic Era, the ancient art of cultivation thrives once again.

The alien world is too fierce!

There are goblins.

As Lin Ye who can travel back and forth between other worlds and reality.

The most important thing in another world is to be alive!

The other world is too cruel, so dog!

Go back to modern times!

If you really can’t hold on, don’t be afraid, he still has an on-hook system.

Boiling can kill people!

This book is also known as: I was obedient in another world, and I returned to reality to strike hard

- Description from novelbuddy