MTL - The Public Enemy of Tower Defense - Chapter 407 demon domain

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.

After dying in the world of One Piece, he was reincarnated once again this time as Neji Hyuga. But fate was no kinder here. With his father dead and the cursed Caged Bird Seal looming over him, for his survival he made a ruthless decision....

Su Yu, who was idly passing his days in a third-tier university, ended up in a terrifying unknown forest due to the “Sinkhole” incident. His school collapsed into the “sinkhole”. The forest was filled with various terrifying mutations, which started, right in his hands.

A blood moon hanging in the sky, the Demon Realm invades and transforms humans into zombies.Wen Yu finds himself reborn back to 2017, the beginning of the apocalypse.“Honey, what's wrong with you? Stop biting me! AH! AH—!”But this time, no longer a weak warrior, he becomes a Soul Master who can kill zombies by cooperating with Soul Beasts.“Combat Form: The Soul Beast undergoes Union with the Soul Master, greatly enhancing the Soul Master's combat ability.”“So, what heights could I reach in this world, and what role could I play?”“I'm really looking forward to it.”