The Sword Deity in Tokyo - Chapter 290: The Great Ancestor

She just took a nap in the lounge, and when she opened her eyes, she was dressed as a fat country girl who was illiterate in ancient times.

Not to mention delicious and lazy, he is still domineering in the village.

No one wanted to marry her in the eight townships of ten miles, so she finally bought a golden tortoise-in-law.

In a rage, the old bully went down the road and kidnapped a husband for her.

It’s just… Dad, isn’t there something wrong with what you kidnapped?

＊

After marriage, Fatty Su is very busy.

Busy transforming bully dad and bully brother.

Busy rescuing the beautiful god general husband.

Busy raising three little bullies, Xiaodouding.

Accidentally, she was busy becoming Dayan’s most powerful 1st rank mistress!

- Description from novelbuddy

Kanda Kyoichi transmigrated to Konoha and became a temporary instructor at the Ninja Academy. Fortunately, he awakened the Mentor System.By teaching others, he could earn rewards.Thus began Kyoichi’s career as a “teacher” in the ninja world.Shisui: “Sensei’s unique interpretation of the Will of Fire has given the Uchiha Clan a true sense of direction!”Asuma: “The essence of the jade lies in protecting the people, with the advanced leading the way for the less experienced. Only then can Konoha become stronger!”Kakashi: “He’s my life mentor. He transformed Konoha!”...Years later, in the memoirs of Kyoichi, now the Hokage, he wrote:“I honestly just wanted to be a life mentor!”

The Aliens descended with hostility.In the face of the Alien invasion, humans were as weak as ants.So this was the apocalypse, the true apocalypse.But where there was invasion, there was resistance.For some people, this wasn't the end times, it was war.So this was war.The real war!

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.