I Level Up by Killing Gods - Chapter 12: The Institute

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

- Description from Novelupdates

A high school student that has lived as a mob-character ―― Mimori Touka

Ling Mohan is an extremely aggressive and domineering Colonel of the No.1 Military Industry Group.

One day, a woman who comes out of nowhere hits him in the head! It turns out that the two are acquainted and had a fling three years ago, after which Ling disappeared, leaving a note asking her to wait for him.

She, however, married another guy, who “died” as mysteriously as Ling Mohan disappeared.

Now fate has arranged a meeting for them on a narrow path. He is determined to avenge her with the craziest passion, and she is determined to torture him with the most seductive flirtation. When beast and beauty meet a second time, who will excel and triumph?

- Description from Novelupdates

I, Lu Li. had an agreement with the system; once the plot was completed, I could go home, but the system played me dirty.

Demanding another round, claiming the plot had gone awry.

Let’s perish together, scumbag system.

You’ll never see me endure such humiliation again.

Sadly, I didn’t die.

Filled with rage, since you won’t let me die, then I’ll make those who once shamed me, hurt me, and betrayed me in haste, pay the price.

The protagonist is not humble, not clinging…