MTL - Marvel: Trading From the Ninja World - Chapter 1 Kahn Pent

While returning home from a boring day of work, a black hole opened up in front of John and sucked him in. Before he was floating in the blackhole, a helmet latched on to him. "Uploading A.I under progress...Activating Survival Kit" A weird robotic sound appeared within the conscious of John and suddenly a white energy enveloped him... After opening his eyes, John noticed he was teleported to a whole new world. A world of magic and he was a user of a system. Arkon, the world John was brought too, was a medieval world which is 10 times bigger than earth. This new world held many new mysteries and this was the beginning of John's adventure. John will dominate and stir the world with his new system. Old technologies begone and use my advanced techys instead! Ha! you want to hold a politic, economical and military war with me? Sorry but my system is too broken for you all to counter.

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

“Ah……painful”

Lying on the cold operating table, the girl’s sentimental feelings faded, a mysterious man took her innocence.

Meeting again, the mysterious man was actually a black bellied VIP, capturing her home, wanting to spoil her.

“Reporting to the Boss, some slag man came looking for the madame.”

“Directly bury him alive.”

“Reporting to the Boss, some slag lady was jealous that the Mrs. came first in a medical contest, and slapped the lady in the face.”

“Her slag face will be broken, send her straight to hell on earth to die.”

“Reporting to the Boss, the enemy is going to catch your wife and use her as a military doctor.”

“Immediately dispatch the armed forces, and bomb the enemy!”

“Reporting to the boss, the lady ran away from home, she said to tell the president she wants to give him a child……”

“F***, I did not feed her last night! Catch her, the army has seven days and seven nights of holiday, I have business to attend to!”

- Description from Novelupdates