Reincarnated With The Undefeated System - Chapter 14 Checking Out The Functions And Costs Of Skills.

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, died in his quest to achieve godhood. Ten thousands years later, he, with the ‘Invincible Heaven Scroll’, was reborn in the body of a young man with the same name. From then on, winds and clouds moved as he set himself against the uncountable geniuses of this new era. His path of becoming a legend has begun once more. Of all eras underneath the heavens, I am the strongest!

- Description from Novelupdates

Jacob Steve, an Old Man, died at 116 after living a whole life.

But Jacob always had a dark side, which he always suppressed and hid from others.
However, in the later years of his life, when death was inevitable, he understood there wasn't any point in having wealth, knowledge, or desires if you couldn't have a life to enjoy them.

He became obsessed with fabled immortality and devoted his reaming life to extending his fleeting lifespan, but just like any other failed.

However, he mysteriously got another chance at life and found a way that led to fabled immortality.
But he was also forewarned that the way led to it was filled with blood and darkness!

In the end, Jacob chose it anyway with no way of going back, and it was also the start of his suffering and his icky, brutal journey toward the 'Immortality' he wanted so badly!

“Son, do you know what this is?”

Thanos raised his golden gloves, and the six Infinity Stones shone with pleated radiance: “If I snap my fingers, you will turn into dust in the wind.”

“Dad doesn’t believe it.”

Fang Mo, who was wearing an endless suit, slowly shook his head, and pointed the Universal Sword in his hand at Thanos Nawa’s bright purple head: “Don’t talk about the Infinity Stones today, even the Heart of the Universe can’t save your dog’s life!”

“Do you know what this is? This is the begging jade!”

Madara Uchiha stood in mid-air and laughed wildly: “It is the strongest spear and the strongest shield, there is nothing it can’t destroy!”

“You really haven’t seen anything hard…” Fang Mo took out a piece of bedrock with a grinning smile: “Dare you dare to compare with it!?”

“Is this… the Sage’s Stone?”

Edward stared blankly at the red crystal in front of him: “Can it ignore the law of equivalent exchange?”

“Well, in a sense, it can only be regarded as the basis for an equivalent exchange.”

Fang Mo touched the portable conversion table in his hand: “But if you want, I can consider sending you a set.”

…

When the fourth natural disaster met the mysterious island module, the cube man finally began to bring disaster to the world.

(To reiterate, the stand-in is Steve, the protagonist of Minecraft, not Captain America, this is the MC text…

- Description from novelbuddy

She is a top-class spy, a poison specialist, but also a young and cute girl with a sinister temperament. In spite of her sweet and innocent appearance, she can complete any tasks without the slightest hesitation. One day because of an incomplete black magic, she was sent into the body of a girl who was deemed as a good-for-nothing. What kind of change will she bring to this continent?