Naruto System in One Piece - Chapter 493: Kiba’s Surprise Attack

Ning Ruogong died to Zebras as he laid his hands on The Energy System, which reincarnated him to the Southern continent of the Planet Kumia.

How strong will he become after cultivating as an undying entity?

Kurono Maou is a high school student who is sensitive of his sharp eyes and bad expression. No girlfriend but gifted with friends in his own way, he had been living a peaceful life.

She barged into his office, ignoring the secretary who was trying to prevent her.

He looked up from his files and frowned to see the girl who just barged into his office.

“ What are you doing here?” He asked her coldly.

She smirked proudly and flipped her hair back and said, “ What do you think I am doing here? I am hungry, take me out for lunch.”

He knitted his brows, “ Why would I? Didn’t I already pay the compensation? I have zero obligation to feed you. So go away.”

The corners of her lips turned into an evil smirk, “ Do you think that you can get away from me that easily? Tsk, tsk. Mr. Han, you have really underestimated me.”

“ I will hunt you down even if you try to hide away from me in a faraway mountain.”

...

Jiang Yue is a member of the most popular and powerful girl group who has lived her life with fame and glory. But what happens when she suddenly dies due to an accident and wakes up in the body of a hidden heiress of the Gu family?.....

Xu Nuan is an obedient and timid girl who suddenly becomes sharp-tongued, bold, and fearless after the accident. Can the people who have always looked down on her accept her strong and fearless attitude?

Han Zihao, President of Han Corporations was known for his cold and unmatched aura was forced to yield in front of the stubborn girl who jumped in front of his car. How will he be able to react to Xu Nuan’s fierce and spirited influence?

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.