MTL - Marvel: Become Athena - Chapter 43

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

When the game reappeared in reality, the world went crazy.

Shang Yinhe originally thought he was just playing games, until he horribly discovered: All the games he has played are reproduced in the real world!

The world turned to a strange trajectory.

Expert: There must be a mastermind behind the earth’s change!

Shang Yinhe: That’s me.

Crowd: The brave man who saves the world has a beautiful face!

Shang Yinhe: That’s me.

Earth: Thanks to the Guardian Alliance for protecting me.

Shang Yinhe: That’s me too. #It’s me, it’s me, it’s me#

- Description from Novelupdates

Jack transmigrated to a parallel world and locked on to a Judge System that provided rewards for punishing evil. Hence, an Adjudicator of Death who stood above the law was hence born.