One Piece: The Strongest Trait System - Chapter 20: [] : The Cheat Code Acquired!

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.

“Was trying to forget my past and live a peaceful life… a mistake?”His twentieth birthday was supposed to be a celebration, not his final moments—bleeding out on a bed, betrayed, and left to die.'Taking the life of a ‘good’ person makes you a murderer, but taking the life of a ‘bad’ one makes you a savior… Why?'As death embraced him, he whispered his final words—“The world’s kindness, right till the end..”…Only to wake up in an unfamiliar body.“Wait… I’m Noir Ravenlock?”A doomed heir, born to rule the world yet bound to a fate engraved with blood.In a world where morality shapes strength, survival demands more than just power—it demands understanding.And Noir, a man or perhaps a demon who once saw the world through twisted eyes, may just see something no one else can.

In the world of war games

Red Comet: “Amuro Ray, what kind of ability is it to bully recruits, come out and face me if you have the ability!”

Lin Youde shook his head: “What you’re looking for is Amuro Lei, what does it have to do with me, Li Abao?”

Go offline and return to the real world, to Konaku.

Lin Youde looked at the steel giant in Gnaku and couldn’t help sighing.

“Gundam is so handsome~!”

Correspondent: “Dr. Lin Youde, I have your sortie order.”

Lin Youde sighed: “Have it started again, stupid soul bound by gravity.”

Entering the cockpit of the red steel giant and opening the open door, Lin Youde said seriously.

“You guys, are you going to start a war again?”

“I just want to play games in peace!”

“Lin Youde, Gu Tie, attack!”

- Description from novelbuddy

After dying, Chen Heng finds that he has transmigrated to an alternate reality: everything is the same, except the world is now a Wuxia world heavily influenced by martial arts! Not only this, he discovers that he has a Fantasy Simulator, from which he obtains rewards that make him incredibly powerful in his new reality as well. Martial arts, immortal cultivation, and overpowered abilities–all of this begins from a single simulation!