I Refused To Be Reincarnated - Chapter 641: The Lucky Ones Have Corpses

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.

“When you think everything is going well, the world will flip you the middle finger.”__I had a fantastic life: a loving family, amazing friends, a stable job... I had it all.But that wasn’t everything—I was also a writer. Writing was my passion, and my novel *'The Land of Survival'* had achieved remarkable success...Little did I know back then that it would become the very reason my life would be turned upside down. I was reborn inside my own novel, and to make things worse... inside the body of the utterly despised villain, *'Fray.'*That pathetic villain who dies right at the start. If the novel had 100 possible outcomes, he’d die in 99 of them... and I’m not exaggerating.But who cares about that? I don’t want this life... I already had everything... Save me the cliché of second chances... because one life is enough for me.Screw this world, and screw the son of a bitch who brought me here , I’ll find a way back to my world... to my life... no matter what it takes.

On the will left behind by the 14 year old suicide victim K:

“Taku Sugawara is the devil. Nobody should believe his words.”

Kurokawa Risa is an ordinary office worker, who has practiced lots of cooking while living alone. One day, she wakes up in another world, with a concerned little spirit hovering over her! She has apparently been transported to a magical, spirit-filled realm by the will of the goddess, and there is no known way for her to go back. She is taken in by a wealthy couple, and they and her new spirit helper treat her with nothing but kindness. There is one problem, however–the food in this magical world is gross! Risa insists on helping the household cooking staff prepare a traditional meal from her world, and it is a big hit with her hosts. Soon Risa knows what she should do in this new world; she should open a cafe and treat everyone to delicious food!