MTL - World of Immortality - v2 Chapter 407 i know your details

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates

In the age of interstellar exploration, three hundred years ago, Mage explorers from the yellow river planet took their first step towards outer space.

It was a joyous event for every mage on that planet, yet unfortunately, space is dominated by other races.

The Peak level Mage from the Yellow River Planet was the weakest power in existence among other outer space races. It's a cruel reality for everyone.

From then on, every mage from the Yellow River Planet began to increase their power level by consuming outer space resources.

Then they constantly researched, upgraded the power level system and tried to pave the way for the next generation of space explorers.

Now, our MC Vincent Carey's ambition is to be the next generation of space explorers.

How is he going to increase his strength and compete among other races to get resources?

How is the unknown little yellow river planet going to be known and feared by others?

This is a world where science and magic coexist.

Some people here seek powerful magic, and some seek eternal truth.

A science tyrant who came from another world, started as a little librarian, with magic in his left hand and truth in his right, kicking the door of the new century with one kick.

Some people call him the forerunner of magic, some say he is the founder of science.

Some people describe him that way.

In the new century, Blair is a symbol of evil.

- Description from novelbuddy