Her Vengeful Lycan Alpha - Chapter 323: Something’s wrong

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.

Jian Ci is the light. An S-class Esper, his powers ripple with the warmth of a thousand suns, his smile a blinding beacon that draws humanity, and hope, to him like moths to a flame. He is the Sun, a magnetic force of nature, utterly unaware of the abyss that gazes back.Yu Xi is the dark. A shadow with skin, a man who walks through life with a silent, consuming emptiness, broken only by a singular, scorching singularity... Jian Ci.He is the Abyss, a dark constellation orbiting a single star, and his existence is now defined by the answer to one terrifying question.How far are you willing to go for him?Yu Xi’s response, spoken as clearly as a death sentence.“To hell and back.”This is the story of an impossible equation: Light + Darkness = ?It is a love that warps physics and morality, a descent into an obsession so profound it threatens to rip the very fabric of their world.Yu Xi knows their combination is impossible, a contradiction that should result in utter annihilation. Yet, with a quiet, terrifying devotion, he is prepared to burn the world, his own soul included, if it means securing his star.

Ye Qiu transmigrated to a world of barren wastelands. He obtained the 10,000 Fold Return System.

The youngest A-rank adventurer, child prodigy Kaizer, finds three babies who were the only survivor of a destroyed village. Then he decided to give up his job as an adventurer and raise them. Over time, the girls grow brightly and show exceptional talents in fencing, magic and management. However, these girls also seem to love their father, Kaiser!