One Piece: Capitalist Brook's Crew Expansion Plan - Chapter 42: Invasion of Skypiea

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

Returning to the Mysterious Era features a boy who can time-travel back to the past using old relics. The twist? He’s stuck in the body of the relic’s owner.After a near-death experience, Cassius unlocks his ability to travel to the past in the body of Li Wei, a member of the Wind Elephant Sect. Li Wei was a coward who lived a life of regrets up until the day the entire Wind Elephant Sect was mu*dered. As Cassius relives Li Wei’s past, he makes different decisions to show Li Wei a different kind of future.By living out the ups and downs of Li Wei’s life, Cassius is introduced to the world of Covert Martial Arts, ties that run closer than blood, and supernatural forces. Crossing the line between the ordinary and supernatural, he realizes there’s no way back. New friends and enemies slowly integrate into his reality.Now, he must uncover the secrets of Covert Martial Arts and get stronger to survive.

In this world, only if you are strong, can you protect the people you love.

Edmund Oakforest is expelled from his family after having a relationship with the king's daughter, who was already engaged to the navy commander. To avoid his execution, he is exiled to the unknown with 10 ships and 100 elite soldiers from the oakforest family, with other workers included. After days of travel, he finds himself in an unknown archipelago. Follow Edmund on his great explorations and the rise of a new empire.