Marvel: Hunter - Chapter 6: Discount on Discount

Freshly turned eighteen, John Newman, a helpless nerd, suddenly gets video game abilities granted to him. A mysterious higher power, a secret Abyss of magic beneath the surface of the normal world, mages, martial artists, eroticism, tragedy and a harem of hot girls awaits.

The world ended the same day Julien failed his job interview. Portals tore open the sky, and monsters went on a brutal killing spree until humanity finally awakened powers to fight back. By sheer luck, Julien awakened an SSS-rank skill, the highest tier in existence.There was just one problem: It gave him zero combat stats.[Skill Name: The Infinite Warehouse][Rank: SSS][Type: Administrative-Class / Economic Authority][Description: You have been granted limited administrative access to the Multiversal Supply Chain. You do not own the items within, but are merely the distributor.]With every new level and upgrade, the skill rewards him with impossible new heights of power. It upgrades from basic shop of healing potions to granting him dimensional contracts to summon Mythical beasts, ultimately opening a door for him to conquer the vast multiverse itself.In a collapsing world, the man who controls the supply… controls everything.

An 18-year-old poor college student tried to apply for a job as a tutor but his life almost ended as demons' meal. In his last breath, a mysterious woman gave him a strange power. When he opened his eyes he had turned into a demon with a system that would turn him into… A pervert.

Now he must lived with his dual identity as a model student named Ethan and an incubus named Damian.

This script was originally supposed to be about a Scum Gong x Cheap Shou — the Scum Gong abuses the Cheap Shou, the Cheap Shou became hopelessly apathetic, the Scum Gong became a Cheap Gong, and the Cheap Shou abuses the Cheap Gong.

That should have been the case!!!!!

But the script began to unfold—-

The Scum Gong was reborn to the past, and encountered the Cheap Shou who also got reborn.

The Scum Gong was horrified to discover that the Cheap Shou had changed his job and became a beast-like, ruthless, blackened Gong, ahhhhh help!

The f*cking miserable Scum Gong was taken and defiled, then defiled and taken, then after being taken from the front he was taken from the back, and finally he was taken into a loyal dog, sensual, tsundere Shou!

- Description from Novelupdates