Maoyuu Maou Yuusha - Volume 4 Chapter 7, “I am the Fearsome General of the Right of the Demon World.”

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.

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.

After forming a blood pact with the Saint and Demon ladies, the good-for-nothing young boy obtained the Yin-Yang divine veins, learned the art of alchemy and martial arts, and dominated the world.The young Shen Xiang had a romantic encounter with a goddess and a witch, and obtained their supreme inheritance, acquired a divine vein that defied the heavens, learned peerless magical skills, and mastered superb alchemy techniques, which made him very successful on the road of martial arts... When he was hungry, he would refine some pills as snacks, when he was lonely, he would flirt with the high and mighty goddess, when he was bored, he would play with those martial arts masters who came to ask for pills, and when he was tired, he would let the delicate wives around him give him massages...

Jing Zhao is an employee of the fast travel branch. Her job is to act as the first love girlfriend of the hero in each small world.

As an object destined to be cannon fodder, the role she plays is either arrogant and hypocritical, or worships money and greed, which is in stark contrast to the true, kind and beautiful protagonist who will appear next to the male protagonist in the future.

The damage that the male protagonist receives from her will be healed by the female protagonist, thus reaching the HE ending of the healing system.

However, the Lord God told Jing Zhao that the male protagonist who was abused by her was hurt too deeply, and he no longer believed in love. All the employees of the True Love Group returned home without a cure, and the small world collapsed and destroyed…

Jing Zhao was forced to go back to the stove and clean up the mess he left behind.
(End) World One: Arrogant and indulgent rich daughter × poor and pure academic god (after seducing the academic god, smash his heart into pieces, and wantonly trample and humiliate him)

Before returning to the furnace, Jing Zhao: It’s just a bet, it’s really interesting to see how we learn to fall in love!

After returning to the furnace, Jing Zhao: …

(End) World 2: Black Lotus Female Doctor×Little Wolf Dog Experimental Subject
Before returning to the furnace, Jing Zhao: Love? What love is there to talk about in the end of the world? It’s not worth the usefulness of your supernatural ability. Don’t worry, as long as you cooperate obediently, the pain will end soon.
After returning to the furnace, Jing Zhao: …

(End) World 3: Qingmei, a fine vase × top-ranking actor Zhuma (Vase attacked the showbiz, abandoned the actor for resources)
Before returning to the furnace, Jing Zhao: You want me to act in any drama that breaks the Internet, are you still my boyfriend? I do not care! If we can’t get the heroine of “xxx”, we will break up.

(End) World Four: Frail and Sick White Lotus × White Cut Hei Tong Husband (ghost) [Ancient]

(End) World Five: The Most Beautiful Female in the Tribe × Overbearing and Loyal Dog White Tiger

(End) The Sixth World: Infatuated Rich Girl × Fake Dude Rich Second Generation

(End) The Seventh World: Simple and Cute Mermaid × Human Singer

(End) World Eight: Voice-activated sleep aid female anchor × Zhenxiang game master

(End) The Ninth World: The Proud Princess×Human Snake Guard [Interstellar]

(End) World Ten: Grinding Fairy × Innocent Daoist [Fantasy]

(End) World Eleven: Green Tea Gold Digger × Uprightness Gets Rich

(End) World Twelve: Gentle scum, paranoid overlord × blatant evil beauty

Content tags: time travel female supporting role
Search keywords: Protagonist: Jing Zhao ┃ Supporting role: Small World ┃ Others:

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