There’s Absolutely No Problem With The Magic Cards I Made! - Chapter 11: Dekan’s Accomplice

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 world called Infinite Soul Star, there is an extraordinary group that controls all kinds of incredible powers by mastering their Soul Force.They are called Soul Masters.Soul Masters awaken their Soul Mark which is essential to walk the path of Soul Cultivation, but they still need the Soul Orb to help them awaken.Emrys crossed over and carried a strange multicolored orb that could strengthen the Soul Orbs. The multicolored orb was simply too mysterious. It can not only strengthen the Soul Orbs and increase their quality, but it can also bring many benefits to Emrys in several ways that he could have never imagined.The Multicolored Orb also provided Emrys a SYSTEM which can help him understand the functions of the Multicolored Orb in an easy way. It changed his life completely. Not only did it grant Emrys the ability to level up the Soul Orbs to the Mythical level that no one in the world knew about, but it also provided him the “Soul Mark” that gave him the ability to manipulate space itself.But this Multicolored Orb seems to be more mysterious than Emrys originally thought. There was much more to it than just a SYSTEM and a few abilities.This Multicolored Orb was an inheritance item of a Supreme Being, one who had surpassed the constraints of a reality known as “Cultivation”. In the universe, every creature engages in a relentless struggle, fighting, killing, betraying, and enduring countless hardships to advance along the path of cultivation. Yet, this Supreme Being had transcended beyond this reality.How?Let's walk on this journey together with Emrys to know the answer. At the same time, we can see how he becomes the Walker of Blue Sky.

The strongest wizard Alfred, in a hero’s party, subdued the Maou and in the process took a cursed arrow to the knee.

Even with the hurt knee, Alfred’s still the strongest wizard ever. So…

「We need a chief for our newly created knight squad!」 「Could you help us as our guild manager?」「We need someone to rid us of the dragon that resides in the North Mountain!!」

Alfred just wanted some time to rest and recover, but no one would LEAVE HIM ALONE!

Because of that, Alfred wished to spend time recovering in a small country village that no one knew about.

『Need a guard in Mulg Village. Wolves and boars attacking the village. Payment is food and board. *Village has a hot spring.』

「THAT’S THE ONE!」

So, the strongest wizard in the kingdom…decided on living the slow life in the country.

Two years ago, Nina married a man she had never met. She didn’t know his name or his age; she knew nothing about this person she was married to. Their marriage was nothing more than a contract with conditions, and one of the clauses was that she should not sleep with another man.

Yet, Nina lost her virginity to a stranger when she knocked at the wrong door one night.

With the compensation she had to pay weighing her down, she decided to draw up a divorce agreement on her own.

When she finally met her husband to hand over the papers, she was shocked to find that her husband was none other than the man she had “cheated” on him with!