Arifureta Shokugyou de Sekai Saikyou (WN) - Chapter 272

Transmigrated from the Blue Planet, Li Pin, once an ordinary university student, found himself thrust into a world of ferocious beasts and demonic creatures. Haunted by the loss of his parents to illness in his previous life, he yearned to understand the fragility and potential of human life.In a realm dominated by Astral Cultivators, Li Pin’s determination to push the boundaries of human potential was unwavering. Driven by the question, “What are the true limits of the human body?” he embarked on a perilous journey into the world of martial arts.Would he ascend to the pinnacle of power, unravel the mysteries of the human body, and truly comprehend the essence of martial arts?

Mu Yue traveled to the world of Naruto and became an ordinary chuunin teacher at Konoha Ninja School and a member of the Root Organization.

Fortunately, after awakening the teacher system, you can become stronger by teaching.

In order not to become Danzo’s consumables, Mu Yue worked hard to teach and increase her strength.

“Complete the teaching rated A for the first time and receive the reward – mastery of fire attribute chakra properties change.”

“Under your guidance, Uchiha Shisui has worked hard to practice, and his overall strength has been greatly improved, and he has been rewarded – the Immortal Human Body!”

Under Mu Yue’s guidance, Zhishui understood that the village’s enemies were not necessarily other big countries, but could also be within the village. People who spoke righteously about the will of fire might not necessarily act in accordance with the will of fire.

Obito got rid of the title of being the weakest person in the ninja school, and Metkai became a master of physical skills even earlier…

- Description from novelbuddy

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.

Chatting in the dormitory at night, roommates wonder how much pain Aunt Flow brings. Mr. Perfect He Zhi Zhou has never bothered joining in on these petty talks for amusement. That is, until he became a woman and laid in bed with a white-cast complexion……

Chatting in the female dormitory at night, roommates sighed over the current pairings in the school of engineering, Shen Xi was a little curious that the problem with these topics is that there was no way to test them. Until she became an engineering male and a bar of soap dropped in front of her……

Introduction in one sentence: About how a top-scoring perfect male with no desire in the opposite gender and an amusing female lead were set up like lightning setting the ground on fire spreading out of control—leading to a sweet and rippling life……

Life is so long, don’t be so arrogant. Some things are bound to deviate.