Global Reincarnation: Only I Know the Plot - Chapter 23:

I am Stephen, assistant to Vegapunk. After transmigrated to the One Piece world and failing in the attempt to take down Imu in collaboration with the Revolutionary Army, I unexpectedly found myself transmigrated again, this time to the Pokémon world.Although my body has become smaller, my mind remains as sharp as ever. My current identity is:The Chief Pokémon Professor of the Pokémon LeagueA mind 500 years ahead of its timeExecutive Vice-Leader of Team RocketThe second Master-level Trainer after Professor RowanThe benefactor recognized by Rayquaza as its successorHonorary Chairman of the Alola LeagueSupreme Commander of Dark Pokémon!

In the year 3021 of the Western calendar, the last world war broke out and the earth was destroyed.
A group of survivors left their homes to settle on new planets. New races, new classes are born. Cities began to be built, countries rose one after another, conflicts between different races intensified, and social order was re-established…
The transformation from a survivor to an aggressor was but a moment.
This is a world where the strong are respected and the fittest survive.
Shang Ping was reborn from the earth in the 21st century to this planet. The moment he woke up, his fate had already begun to change.

Content Labels: Strong Soul Conversion Court Marquis Heaven’s Chosen
Search keywords: Protagonist: Shang Ping ┃ Supporting roles: Solan Edrich, Liu Xi, Austin ┃ Others: future time and space, battleship, interstellar war, rebirth, distant starry sky

- Description from novelbuddy

The leader of the thousand demons, the Demon God Chun YeoWoon. Due to an unfortunate accident, he had been sent to the distant future.

In fact, Ling Yun was the son of a wealthy businessman. But one day, his mother finds out that her husband is having an affair with his secretary. And after that she decided to divorce her husband, but at that time she did not realize that she was pregnant with Ling Yun.

After learning about her pregnancy, she decided to move to another city. And since then, their lives have been up and down. Because of the economic crush, and also his mother's health was getting worse.

He decided to take the 'Dark' path, which led him to near death. But just as Ling Yun was nearing his end, he heard a little girl's voice asking him.

“Do you want to live?”