Adding Friends Can Make Me Stronger - Chapter 6 - You Are Destined to Be from Different Worlds!

After the judgment, the ire of God was revealed with the words: “Be cast unto eternal damnation!” And so it was that humans and jinns alike found themselves scattered across the Nine Circles of Hell, left to burn and suffer for eternity. Until after an untold number of eternities, an angelic voice called out, announcing God's decree: “One soul shall earn the chance to return to grace.” Humans and jinns found a shimmering screen appear before their eyes, tallying their sins and something called 'Fragments of Divinity'. “Cleanse away your sins,” said the voice. “Do what must be done!”Now, a human known as Wretched Nameless One—the only human found in the Ninth Circle—sets out on a journey to claim his spot in Heaven, tasked with fighting hellish monsters and devilish hell-dwellers competing to return to grace. Will he escape eternal torment and rise to grace or return to the everlasting cleansing fire once more?

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.

Reach the peak of immortal cultivation and become able to run amok without fear!
Use the power of martial arts to rule the world and defeat heroes!

The weather changes at the whim and wave of a palm. He who cultivates both immortal techniques and martial arts, who could possibly defeat him!

Xiao Chen is a shut-in who purchased a ‘Compendium of Cultivation’. Soon after, he crossed over into the Tianwu World, a world ruled by martial arts. He then refined pills, drew talismans, practiced formations, crafted weapons and cultivated the Azure Dragon Martial Soul that had not been seen for thousands of years.

This is a story that tells of an exciting and magnificent legend!

- Description from novelupdates

Tenjou Yuuya has been a bullied boy since the past.He lives in the home of his beloved grandfather while he goes to school. As usual, he receives a harsh bullying, and he takes an extended absence from school to have some time to heal his wounds.While on this long time of absence, he takes the opportunity to clean his grandfather’s house and goes to a room he never went before, where his grandfather keep many different objects that he gathered from his travels around the world. While he was arranging the objects, he found a door not on a wall among the objects.Out of curiosity he opens this door, what he found on the other side was…