Ace Of Terrans - Chapter 925: Massacre.

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

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.

Traveling through the Naruto world, he was reborn as Uchiha Itachi’s uncle, and awakened Dio’s substitute “World”.

Have you ever seen Uchiha practicing blocks?

Ghost back, tire shoulders, a face of Araki lines.

Tear Susano with your hands, step on the tailed beast, and fight Kaguya Hime hand-to-hand.

I heard that the thunder escape ninjutsu in Yunyin Village is unique in the ninja world? I invented Uchiha’s Yin Escape Illusory Body Art.

I heard Itachi wants to exterminate the clan? When I went up, I just slapped my nephew’s teeth.

I heard that Obito Kamui is invincible? I punched through the void.

I am the god of muscles of Uchiha.

Smash – Varudo!

This book is also known as: “Saving Uchiha from the Destruction of Konoha”

- Description from novelbuddy

The female lead tormented scum without rest, and the male lead showered her with endless affection.Returning to the turning point of fate, she was determined to strike the supreme with her fists and kick the trash underfoot.Those who had once wronged her, deceived her, and taken advantage of her, brace yourselves for trembling!Watch him and her: not wasting their prime years, hand in hand, they compose a grand wedding!