Sword Art Online - Vol 6 Chapter 10

A 34-year-old NEET otaku, chased out from his house by his family, found that his life is reaching a dead end. He then recalled that his life could actually have been much better if he had made better choices in the past.

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

In his past incarnation, Lu Xuan was the youngest Celestial Lord that the universe has ever seen!
An accidental rebirth brought him back to a thousand years before, where the Earth had just begun its spiritual reawakening. When he stepped onto the way of cultivation for a second time, he swore to rewrite all injustices suffered in his past life, and defeat all enemies that dare stand in his way!
Let invincibility be his cultivation and the path he treads. In this life, it is his destiny to be invincible!

As soon as he crossed over, Su Mu came to another world.

In this world, there are warriors, qi refiners, and all kinds of terrifying ghosts and monsters!

A good rebirth simulator turned into a death simulator because it was too dangerous.

For him, death is not the end, but the beginning.

In the simulation again and again, thousands of demons have been derived!

The flesh and blood are put into the pot, divided and eaten, turning into a bloody skeleton.

He died in a wrongful battle, his body did not rot, and he turned into a dry zombie.

Introduce thunder into the body, turn extreme yin into yang, and transform into a fierce reggae.

Devouring demon souls, suffocating the sky, turning into an undead ghost car.

Some people become immortals.

There are also people who die into demons!

- Description from novelbuddy