Modern Traveler - Chapter 57. New Era

The male student, Fukai Nagamasa, ignores his studies for college entrance exams in favor of following the path to chuunibyou. As he fainted during night cramming session before the exams, he realized that he was transported to a parallel world as a feudal lord in the Sengoku Era. Not to mention that suddenly, he was marrying the sixth Demon King, Oda Nobunaga’s little sister, the one who was purported to be an unrivaled beauty?

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

This is the story of a modern sailor who was accidentally reborn as a soldier of the Brazilian Expeditionary Force, and finally became the largest plutocratic family in Brazil by virtue of his foresight.

- Description from novelbuddy

[DING! Congratulations to the Host for obtaining SSS-Rank Dark Dimensional Reality Talent][Attribute: Darkness]Freed from nuclear war terrors, all humans now have to face the new reality of their fate.Humans are given a power that allows them to have different talents according to their abilities and luck, including obtaining the power of past heroes.Aaron Lewis, an 18-year-old young man, must bear the devastating reality that his mother was killed by an unknown group. The turmoil of uncontrollable rage in his heart makes his talent affected.[WARNING!][System detected Darkness attribute energy increase][Initiates talent rank evolution][Adjusting talents with attributes ][Evolution Completed]Just as Aaron opened his eyes, he saw he was floating in a void dimension with thousands of caged ancestral souls waiting to be freed or summoned. They are the souls of heroes from all over the world.[Main Talent: Dark Dimensional Reality][Rank: SSS-Rank]With his flexibility to explore dimensions beyond ordinary human sight, Aaron gathered thousands of ancestral souls and turned them into his army.To his surprise, Aaron found a way to free his mother's soul and bring her back to life, which was to become a Great Ruler.“There is no other choice. I will become a Ruler.”