The Rebirth of a Trillionaire

The early part depicts an ordinary family and the protagonist's transformation. His changing mindset completely breaks through his formerly timid personality. He longs for technology and a life with cheat-like advantages. Rather than explaining the scientific principles, the story focuses on the conveniences science brings. With a genius-level brain, the protagonist opens up new fields of science, voluntarily gives up his citizenship, founds a country of his own, and works in coordination with the country he once belonged to. He comes face to face with aliens.