The Billionaire's Secret Baby - Chapter 10: What Baby?

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

In a magical medieval world, it's difficult to hold on to one's beliefs... even maintaining one's integrity is a challenge.Because the commoners here are not simple; they are ignorant, greedy, and cruel.Because the nobles here are not noble; they are insidious, ruthless, and tyrannical.However... not all human constitutions can be generalized.Lann touches the two hearts and three lungs beneath his chest.He estimates that not only in this world but also in the other worlds connected through the convergence of celestial spheres, he can maintain a healthy sense of morality.—And then get rid of all the incorrigible scum!

In the darkest and most cruelest dungeon is the birth of a specie who lives his every day life trying not to fall prey to the claws of the predators.

To survive amongst predators, one most shed off the flesh of a prey and take on the skin of an even bigger predator.

Power Ranking

Note

The numbers refer to existential value, and all lifeforms has it.

ADVENTURER GUILD POWER RANKING

Lv 1 - 20 = F (1 - 49)

Lv 20 - 30 = E (50 - 99)

Lv 30 - 50 = D (100 - 499)

Lv 50 - 60 = C (500 - 999)

Lv 60 - 80 = B (1,000 - 4,999)

Lv 80 - 100 = A (5,000 - 9,999)

Lv 100 - 200 = S (10,000 - 19,999)

Lv 200 - 500 = SS (20,000 - 29,999)

LV 500 - 900 = SSS (30,000 - 49,999)

LV 900 - 1000 = XS (50,000 - 99,999)

SPIRITUAL ENTITY RANKING SYSTEM BELOW

■MONSTERS AND OTHER NON-HUMAN LIFEFORMS

●Apocalypse > 100,000,000 - 1,000,000,000

●Armageddon > 10,000,000 - 99,999,999

●Cataclysm > 1,000,000 - 9,999,999

●Disaster > 100,000 - 999,999

■HUMAN

●Transcendent > 100,000,000 - 1,000,000,000

●Warlord > 10,000,000 - 99,999,999

●Mystical > 1,000,000 - 9,999,999

●Heroic > 100,000 - 999,999

‘I must entertain the masses.’ This was Jester’s lifelong goal.After leading 12 different lives as a Hero, King, Sage, Jester, and more, all he wanted was to mock the king and his court.Unfortunately for him, his majesty didn’t appreciate his vicious jokes.Jester died, trying to flee for his life. But death wasn’t the end for him.For his 13th and last life, he triggered the Archetype System and reincarnated in a world of magic and perils.[This is your last life. Don’t waste it!][Welcome to the world of Archetypes!]Oh, before I forget, soon, players from Earth would flood into his new world.But even players won't escape from his clutches! Even people from the Earth will be tamed!