She Was Both Called God, as Well as Satan - Chapter 70 – Retreating from Hell

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.

“Kat, you have a tail” said Lily

“Look, Lily, it really isn’t that big of a concern” said Kat

“You.Have.A.TAIL KAT” said Lily “How is this not a concern to you?”

“Well, the dream I had was a bit weird as well, but if I’m honest, I’m mainly worried about the floating text that’s on fire” said Kat

“THE What?” said Lily

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Join Kat on her dimension hopping adventures as she fullfills her demonic duty and answers the call of the summoner. Each week Kat will get involved with new strange situations and oppurtunites that await her. During the week she'll have her best friend Lily, and perhaps a little help from Sylvie to figure out what's she supposed to do with her life now that she's becoming a demon.

Li Xu occasionally got a sign-in system, and his life has been different from now on. Enjoy life, look at the scenery, sign in, spring flowers bloom, and face the sea.

- Description from novelbuddy

Everyone rumored that Z country’s young master Jun was cold-blooded, decisive, and not close to the female gender, but he took in an illiterate little girl as the pearl in the palm of his hand.

However, the little girl brought her case to the table. An illusion, it was all an illusion. What not close to the female gender? Which animal was crushing her every night?

“Baby, let me love you.” The man undressed her with his lips. She retreated pitifully, “Don’t want, don’t want, you’re bad.”

“Women love bad guys.” After eating he turned around to wipe his lips. She kneaded her pitiful little waist, tears falling, “This one is not a woman, she’s just a little mermaid.”

- Description from Novelupdates