Martial King's Retired Life - Chapter 43Book 15:

Nikola Tesla, the genius, a man who lost everything to balant capitalism and betrayal, awakens to find himself reborn as an orphan. What is this world? Why is he here? And will he once again fall for the capitalistic betrayal or pave his own way? What would happen if his genius adapts to cunningness of the society?

An era where every person in the world can see ghosts.Only I cannot see ghosts.

“The missing ingredient is a test subject with Royal Blood...”Raven Kyzer, a Commoner boy, grew up in an orphanage along with his twin sister, after losing their mother at a young age, having never met their father.After being discovered to possess Royal blood, the twins are abducted by the Church of Persona. Raven is used as a test subject in an ancient form of Forbidden Magic, known as the Homunculus Ritual, while his sister goes missing in the clutches of the church.The Homunculus Ritual is conducted to turn Raven into a powerful but mindless Monster, a loyal weapon for the church with no sense of free will...but something goes wrong, the ritual fails to destroy Raven's mind and he escapes the clutches of the church.Furious at being turned into a Monster, Raven swears revenge against the church, determined to make them pay for what they did to him, as well as to rescue his sister from their clutches.But there's only so much he can do by himself, even with the new powers he gained through the Homunculus Ritual...that's when he has a fateful encounter with the nation's most wanted criminals, a group known as The Irregulars, who, like Raven, have their own reasons to despise and go after the church, as well as the corrupt Nobility that oppresses the Commoners.With their goals aligned, Raven decides to join The Irregulars, taking the first step on his long, arduous path to revenge...

After a cruel betrayal in the hands of people he thought he could trust, Ethan Carter lost everything—his idea, his future, even his life.But when he wakes up fifteen years in the past, he realizes fate has given him a second chance!And this time, he’s not alone.[Ding!][OmniTech System Activated!]With a system guiding him and access to groundbreaking technology decades ahead of its time, Ethan was about to rewrite history!Supercomputers? AI? Quantum processors? Bioengineering? The system provided blueprints to all.Now, armed with the knowledge of the future, Ethan will rise as a tech industry giant, crush his enemies, and build an empire that no one can overthrow!Wealth, power, and revenge—this time, he’s taking it all!