MTL - I Have a Big Problem with My Achievement System - Chapter 4 Look what I found!

The world is terrorized by the powerful Black Witch who has been sealed in the moon. Every ten years, the night of Hexennacht arrives and a chosen witch must battle the Black Witch in hopes of finally defeating her.

As the current decade’s Hexennacht approaches, a mysterious girl named Kagami Kagami arrives and meets Horinouchi Mitsuru, the daughter of the previous Hexennacht representative.

It takes place between Kyoukai Senjou no Horizon and the City Series, two other series by the author.

“Died by Truck-Kun. Reborn in a whorehouse. Blessed by a demonic system. And now? I'm about to make this entire fantasy world moan my name.”Kael Rennhart was just another overworked salaryman on earth—until fate and uncle-kun gave him a one-way ticket to Virelia, a mystical world of swords and sorcery.Waking up in the body of a broke brothel worker with zero prospects, Kael thought he hit rock bottom… until the Porn Empire System awakened inside him.[System Activated: Welcome, Embodiment of Lust.][Mission: Build the greatest adult entertainment empire in the realm.][Failure Condition: Eternal blue balls.]Now, with Lust Points to farm, kinks to unlock, and a cast of dangerously hot women (and men, and elves, and orcs, and... others) joining his cause, Kael must rise from gutter-level debauchery to become the Lust Overlord of the continent.But power, pleasure, and profit don’t come easy...

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy

Hye lived his entire life without a class. After the apocalypse hit the human world, strange creatures invaded and killed humans while new lands were being added.

Systems were given to humans and with the help of the guides, humans started to fight back for their lives. All of this happened under the watch of the venerable beings who were shining stars in the sky; gods!

Hye dreamt his entire life of a chance to prove himself. He was a hard working, earnestly learning and smart youth. However, the apocalypse never was merciful to such humans at all.

Until one day he got a chance to go back in time, when everything started. At this new starting point, he found himself able to finally obtain what he wanted, a class for himself and power beyond imagination.

But will things be this easy for him?