That Unique Monster Who Just Got the 'Consciousness' Passive Skill - Chapter 139: Thump

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.

One day, a button appeared in front of me.

– Auto hunting by pressing a button.

[You have been chosen as the new Lord.][You now hold dominion over your very own floating island.][Build your kingdom, summon legendary allies, and rule the worlds!][You have unlocked the SSS-rank Ultimate Gacha System.]Atlas Blackthorn was born with a miserable F-rank battle talent, certain he'd remain a background figure forever. But during a hunting trip, his teammate turned on him and hurled him into a deep ravine.That’s when the system chose him.Granted the Ultimate Gacha System, he gained the power to summon legendary warriors, rare artifacts, and, of course, waifus.With the system at his side and ambition burning within him, Atlas sets out to become the greatest Lord across all realms.How far will his dream take him?

For three years Calix suffered from the Backlash of his undecipher Term Attribute. As he couldn't use his unique power, he went through series of misfortunes which caused him to lose his self-esteem. However, one day, he was caught in an incident that led him to awaken his hidden power(luck).“The fuel of my Term Attribute is sexual practices with the opposite gender?”