Naruto: Escape From Konoha - Chapter 146: 142: Changes in Sharingan

This world is not only as the public knows it; there is an underworld that ordinary people don't encounter.Government agents handle troubles in the shadows, while corporate assassins privately deal with issues.Assassins, mercenaries, arms dealers, and spies exist, along with a dark web that ties this world together, and tycoons who attempt to control everything with money.Gao Yi entered the underworld, unbeatable in close combat, carving out his own domain.But there are guns in this world. Beyond seven steps (close combats), guns are faster.Within seven steps, guns are both accurate and quick.Only within three steps does Gao Yi's punch become faster.Unable to beat them, he chose to join them, aiming to rule them all.To rule everything, become the king of killers in the eyes of mercenaries, the king of spies in the eyes of assassins, the king of killers in the eyes of spies, and the king of intelligence in the eyes of arms dealers.Until he is crowned king by the entire underworld, Gao Yi is the ultimate firepower.

It has been 10000 years. The tide of spiritual energy has returned.

The prosperous Tokyo has returned to the Edo Period and had hordes of supernatural creatures roaming the streets.

In the desert, the Pharaoh was leading his army and awakening from his eternal slumber.

Vampires and werewolves were locked in a constant battle in the Eastern European plains.

Witches and evil spirits were traversing through the markets of Europa.

The feathered serpent was stretching its body on the American Continent, opening its eyes during the cycle of death.

Humans had fallen from the top of the food chain as they remembered the fear that the legends carried.

In this world where demons and monsters roamed, Lester looked at the shadow of the ferocious worm cast on his body and told his system.

“Please give me a set of Sunfire Cape, Randuin's Omen, Frozen Heart, Spirit Visage, Warmog's Armor, Thornmail, oh yes, and the Gargoyle's Stoneplate, Force of Nature, Adaptive Helm, as well as Righteous Glory...”

He then brought his hands together against the trembling monsters.

“I am not talented, but I am going to bust your heads open today!”

“Grasp of the Undying!” Life Value +5

“Dark Harvest!”Damage Growth +5

“Overgrowth!” Life Value +2%

“Gathering Storm!” Spell Strength +100

What? You want me to eat these mutated creatures? Let me tell you! I, Lester, will rather die of starvation or jump down from here than to...

System: “Life Value +40”

“Wow, it tastes great!”

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?