To achieve immortality, I cultivate using Qi Luck - Chapter 18 - : Chapter 18: The Price of Knowledge

Traveling through the world of comprehensive martial arts, Xia An awakens the god-level corpse-touching system, as long as he touches the corpse, he can get various rewards!

I wanted to develop wretchedly, but I just became a six-door patrol, and I was ruthless at the beginning!

Ruthless: “The pervert will die!”

Xia An: “Obviously you rushed up by yourself, so can you go down to the ground now…”

With being involved in various disputes, Xia An’s strength is constantly increasing.

“Ding! Congratulations to the host for touching Ye Gucheng’s body, gaining 20 years of internal strength, flying immortal sword moves from heaven and earth.”

“Ding! Congratulations to the host for touching Yang Dingtian’s corpse, gaining a hundred years of skill, and moving the universe.”

…

Many years later, Emperor Ming looked at Xia An with a wry smile.

“Wu Wang, why don’t you be the emperor?”

- Description from novelbuddy

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

The Ancient Fiend Dragon Emperor, Su Han, had once governed the holy realm and held sway for a whole century as the most powerful man of the entire galaxy!However, after his death from berserk Qi deviation due to merging different cultivation levels, his men mutinied, his lover fell into a deep sleep, and his best friend became a fugitive!Now, after being reincarnated, Su Han will surely make a comeback and turn things around, killing everyone that had once betrayed him!!!

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.