MTL - Game Design: It is Very Simple For You To Fill In? - Chapter 173 "To the Moon"

While on a school field trip in the Czech Republic, Kang Hyuk happens to stumble into a shop called “Archmage.” To his disbelief, the shop is actually owned by an archmage… from another world! Forced to become the Archmage’s disciple, Kang Hyuk is punted into the Kallian Continent, where might and magic overwhelm and wyverns fly high in the sky…

In this world, people are either sword-wielding knights, magic-wielding mages, or spirit-wielding summoners. There hasn’t been anyone yet who can do all three… until now.

Six years ago, he disappeared silently! After six years, he becomes the unparalleled "God of War" and returns with glory, only to find that he has a daughter whom he never knew of. Looking at his wife and his daughter, he says, "In this lifetime, I'll bring you the greatest honor and glory!”

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.

Liam, a socially awkward college student, spends his days immersed in anime, video games, and hentai, escaping the monotony of his real life. Despite his fantasies, he’s never experienced a real relationship or intimacy. But when he is mysteriously transported to the fantastical world of Eryndor, Liam’s life takes a dramatic turn.In Eryndor, Liam is hailed as the ‘Lustforged Hero’, a legendary figure destined to save the realm from the tyrannical sorcerer, Maltheris. But there’s a catch: in this world, power is drawn from desire and intimacy. To grow stronger and unlock his true potential, Liam must navigate a delicate balance between his newfound responsibilities and his own untapped desires.Joined by a group of fiercely loyal followers—each with their own unique abilities and personal struggles—Liam embarks on a journey to master his powers, unite the fractured kingdoms of Eryndor, and confront Maltheris. Along the way, he forms deep bonds with his companions, including the enigmatic warrior Lysandra, the cunning mage Erynn, and the rebellious rogue Selene. But as Liam’s power grows, so does the temptation to lose himself in the very desires that fuel his strength.