Mages Are Too OP (WN) - Chapter 217 - Who Says A Shield Can’t Attack?

Caden Ryder.Having both the status of a Transmigrator and a regressor.Once a human from Earth and a ruthless domineering general of the Purple Continent.His journey through the mystical world was rough and filled with betrayals.Following the death of Emperor Rozen Riverrun and the rise of Emperor Zeraith Riverrun.Both eras brought about the rise of the Redmen Race.And the death of the Purplemen Race, in the end....After years of fighting, after years of defending the Purple Continent.It was all for nothing. But little did he know that his execution was the beginning of his journey.[Regression Alert!]Regressing back to the time when Kyle Freeman transmigrated into the body of Caden Ryder.Now amped with the knowledge of two past lives, with his determination to grow stronger.With the zeal to live the mundane and quiet luxurious life he has always dreamed of.Caden must walk the path of domination, the path of conquerors.Armed with a Primordial System. Armed with three SSS-Ranked Ultimate Skills.If he must conquer the Red Continent to live his mundane, quiet, and luxurious life.Then so be it, he shall conquer the Red Continent.With the knowledge of his past lives, walking on a path of mysteries and adventures.If there's no way. he will create a way

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.

A child was born unable to cultivate Inner Strength. In order to gain his father's attention and regard, he resolutely chose the painful and difficult path of cultivating Outer Strength. As spring gave way to autumn, time flew by, and the child grew up... he became a young man. What truly changed his destiny was a mysterious Crystal Stone formed from a meteor—the Meteor Tear. This Meteor Tear, unbeknownst to the young man, merged into his body, and like a caterpillar transforming into a butterfly, the young man metamorphosed... And with that transformation, everything changed. And his father finally came to realize the astonishing strength of the son he had never truly invested his Heart Power in...

The consciousness of a Great Magus suddenly returned to his original body on earth, just before he transmigrated into the magic world.

Nothing has changed, it's still the same earth.

However, when he looked at earth once more as a former great magus, he discovered earth was not as simple as he knew it to be.

Hidden magus, legendary races such as vampires and werewolves, they do exist, ruling the world through the shadows.

Faced with a former great magus, who possessed as many spells as libraries, would the earth that had been ruled by a few people be able to remain calm?