MTL - Unforgettable Emperor’s Favor - Chapter 6 system

The year was 2030 when dungeons descended and wreaked havoc across the world.Fortunately, along with the descent of the dungeons was the awakening of various people obtaining superpowers, allowing the world to barely defend against the worldwide threat.Five years later, Desther, a young man that only wants to watch anime and read online novels, awakened the SSS-Grade Talent, Ultimate Thief, allowing him to steal a target’s attribute in battle and making it his own.However, along with the overpowered talent, was an announcement he wished he never got.[You obtained the title, [Chosen One]][Clear the dungeon or Die!]

His legendary class is The Husband Of Deathwill Sisters!

While other players went through common quests to get their classes, Alex started by getting a legendary class: Husband Of Deathwill Sisters! He got three beautiful wives from the start and the legendary castle!
What would his girlfriend and friends say about this once he reveals his class to them?
And what about Deathwill Sisters? What is their plight, and why would they suddenly get a husband?

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.