One Piece: I'm Destined to Be the Son-in-Law King! - Chapter 16: Start ’Em Young - Raising Your Future Wife

[This is your typical story where there is a System of unknown origin given to mankind, and the existence of Towers, Dungeons, and Constellations, the known or unknown ‘Gods and Demons’ of humanity’s collection of myths.]

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— Ding!

[Astronomical Event!]

An event called 'Emergence of Races' struck the human world where the planet Earth was stretched out like dough causing it to become seven times its original diameter.

Various Towers and Dungeons sprouted out of nowhere that caused an earthquake that broke the seismic scale.

Billions of humans died in the process that crumbled human society in an instant.

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And just like that, Russell Moon reincarnated in the world of his-considered-failure unpublished novel [The Forgotten Swordsman of Ruined Star], sixteen (16) years before the beginning of the ‘Main Story’ which was set forty (40) years after the Emergence of Races.

And due to that very reason, the existence of 'Untouched and Unknown elements' came back to bite him!

'Why did I write that way?'

Russell Moon lamented.

I, the mighty Telepath Starlord, got banished into the mortal world. The days in the mortal world are much better than those in heaven! Everything is here — money, authority and most importantly stunning beauties! I am from a rich family. Yes, I am indeed wealthy now. The kind of wealth where you would not want to displease me. Domineering CEOs, military big shots, business geniuses, you name it — I know them all! I know everything you are thinking about. You can’t defeat me anyway, how are you going to go against me? A century in the mortal world is only equivalent to a hundred days in heaven.
As an urban banished immortal, I will enjoy the heck out of my time in the human world and a huge commotion would arise in heaven!

- Description from Novelupdates

“You died.”That was what the mysterious figure told him, but then he was given a second chance for the good deeds that he did in his previous life.“Super Prodigal System!”“Cultivate to immortality by wasting as much money as you can!”For the former number one prodigal of Earth, this was the perfect system!