The World's most Overpowered Side-Character - Chapter 7: This World Is Beyond Saving

He is an undead who is devoid of all humanity, he is the one and only supreme overlord, he is a man who has severe mysophobia.

“The missing ingredient is a test subject with Royal Blood...”Raven Kyzer, a Commoner boy, grew up in an orphanage along with his twin sister, after losing their mother at a young age, having never met their father.After being discovered to possess Royal blood, the twins are abducted by the Church of Persona. Raven is used as a test subject in an ancient form of Forbidden Magic, known as the Homunculus Ritual, while his sister goes missing in the clutches of the church.The Homunculus Ritual is conducted to turn Raven into a powerful but mindless Monster, a loyal weapon for the church with no sense of free will...but something goes wrong, the ritual fails to destroy Raven's mind and he escapes the clutches of the church.Furious at being turned into a Monster, Raven swears revenge against the church, determined to make them pay for what they did to him, as well as to rescue his sister from their clutches.But there's only so much he can do by himself, even with the new powers he gained through the Homunculus Ritual...that's when he has a fateful encounter with the nation's most wanted criminals, a group known as The Irregulars, who, like Raven, have their own reasons to despise and go after the church, as well as the corrupt Nobility that oppresses the Commoners.With their goals aligned, Raven decides to join The Irregulars, taking the first step on his long, arduous path to revenge...

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.

(*NO RAPE*)Kitanna stood still, not worried about the new person; she was worried about herself. The royal guard was shirtless and standing so close to her, with his body pinning hers. She was still trying to get her thoughts straight when she found herself being dragged onto the bed, with the guard on top of her. She raised her hands to push him, but he was faster. He caught both of her hands with one of his and pinned them above her head, using his other free hand to cover her mouth.Kitanna felt blood rush to her cheeks, and the next words she heard sent her world spinning in 3D.“Now, moan, princess...” Those words brushed against her ear, causing the hairs on her neck to stand..........Set in historical times, in the ancient kingdom of Morado. A young princess, Kitanna, enjoys life to the fullest, living every day like the princess she is. But after an incident, she is left to only trust herself and her instincts in the palace, which was filled with betrayals and corruption.A guard, who was trained to protect the crown, lived his life peacefully, killing when he was ordered to but never speaking to people around him until he crossed paths with the sassy and clumsy princess. Then everything changed.