MTL - Pirates: Becoming Stronger and Bigger Since Becoming Shichibukai - Chapter 61

Upon being reborn, she immediately offends a vicious two-faced bigwig.

Stricken with a dull, boring life, Gael has already discarded his ambitions as a high school dropout. However, a chance encounter with death leaves him a choice:[“Meet your end accomplishing nothing, or continue on in an unforgiving world and learn what it is to live.”]Wishing not to die, he accepts the offer, being granted a new life in a fantastical, mysterious world of Gaia. In this new world, he is not granted an easy life, instead hunted as those like him, transported from Earth–”Outlanders”--are deemed to be executed on sight.He is not helpless, though, granted a unique gift upon being reborn in this world–[Integrating system into body.][...10%...][....45%...][....87%...][Integration complete.][Gacha System initiated.] [Level: 1]

The Swordmaster who has returned by chance to save the world!

The protagonist of the collapse of the three former civilizations is Dr. Mei. What is the end of logic, the strongest brain, super intelligence, this is the story of the strongest scientist of Honkai with knowledge of the moon becoming the god of science!

- Description from novelbuddy