DxD: Building A Demon Clan From Scratch. - Chapter 277: Praise

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 low-level healer Elias Vale stumbles upon a cursed cocoon in a forgotten ruin, the last thing he expects is to hatch the reborn soul of the Demon Queen Revantra—in the form of a scared little girl.To save her from divine execution, she binds herself to him through an ancient soul pact, fusing their fates. Now, Elias is stuck raising the former destroyer of worlds—who can barely tie her shoes, but occasionally melts furniture when she pouts.What starts as reluctant guardianship soon spirals into something far more dangerous. As Rhea (her new alias) grows stronger, older, and far too attached, Elias must keep her identity hidden from zealous church inquisitors, ambitious heroes, and the remnants of her own loyal followers—some of whom want her dead... again.But the longer he protects her, the deeper the bond grows—and the harder it becomes to tell who’s really taming who.Because the world once burned beneath her wings……and this time, she’s not letting him go.

A Journey Across Time, A Battle for FreedomWhat if you could go back in time?What would you do?Stop the world war?Stop slavery?When Joseph Situma, a modern-day man, is thrust back to the year 1542, he is reborn as Khisa Lusweti, the son of a village chief in Eastern Africa. Struggling to bridge the gap between his past life and his new reality, Khisa must navigate the brutal tides of history. But as he uncovers the looming horrors of the transatlantic slave trade, he realizes that fate has given him a chance—an opportunity to change the course of history.Armed with knowledge beyond his years and the trust of a people who see him as both a leader and a boy, Khisa must unite warriors, outthink ruthless enemies, and fight for a future that was never meant to be. But history is not so easily rewritten, and with every victory comes a greater challenge.Will he defy destiny, or will the weight of the past crush him before he can break the chains of oppression?A gripping tale of resilience, strategy, and the unyielding spirit of a people on the brink of war.

Seven days remained until the countdown to genetic mutation.Seven days later, all creatures on Earth would undergo mutations. Giant mutated creatures would swarm and attack humanity, putting their fate in jeopardy. The entire Earth would be ruled by these mutated beings!Yang Xiao accidentally walked into a genetic store where various gene potions were sold, capable of altering human body functions.From that moment on, he embarked on a crazy journey of genetic evolution.