The Portal of Wonderland - Chapter 1 - Fishing Boy

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

Accompanied by all kinds of crisis and despair, was the arrival of mankind’s first significant superhero.

The tomatoes and potatoes are piled up in the warehouse, the dead horses are squeezing the milk, the vampires are carrying the watermelons, the succubuses are picking the eggplants, and the Lich King is quietly licking the ice cream…

The people who died in the crown pointed to the tribes:
Let the dead be born, and let the dead die!

(This book is based on the dungeon and the Warriors, Warcraft, heroes invincible, riding and cutting, and another million finished “Wasteland Ranch” character guarantee)

- Description from Uukanshu translation

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.