Writersblockills

After slumbering for years in the darkest pits of the abyss, Haruki Shin is awoken by the demon lord of lust. She tries to remind him of a contract he signed with her in exchange for the power that would help him exact his revenge in the mortal world.
However, who or what he wanted to get revenge on? He couldn’t remember. Replaced with a hazy mist, his memories had long since faded. But to the mistress of lust that didn’t matter as she forced him back into the mortal world with the demonic body of an incubus. 
Feeling lost he’s forced to adhere to each of her commands, and despite his refusal, he can’t resist the binds of the contract. Eventually, however, as he learns more about his tragic past, and the existence of the lustful system he’s been blessed with for his revenge, his path to becoming a monster finally begins.

[Warnings]:
Sexual content||Gore||Traumatic sequences||Mention of slavery and other heinous crimes||Step-relationship||Genderbending|| 

[Note]:
1. None of the heroines will cheat on MC
2. Does involve MC stealing other people's partners
3. Please let me know about any grammatical errors in any chapter through the comments.
4. MORE GOLDEN TICKETS = FASTER UPDATES!
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Absolute Depravity: Reincarnated with a lustful System

A day had passed since the demon lords left Curatos castle to let Haruki have the time he needed to prepare for the oncoming battle with the most aggressive of them all. None of his companions were on board with the idea, but since the promise was already made they had no choice but to help him set up everything and even figure out a plan to help him win.

"I seriously can't believe you've done this," walking out the front of the gates into the castle's garden, Moriyana was finally back to talk with Haruki after a whole day of seclusion.

Turning around to look at her, Haruki made the dark sword in his hand vanish. Following Moriyana's words, Riley who'd been fencing with him also shifted her attention toward the grumbling demon.

"You're finally out of your room?" Haruki muttered, delighted to see her again.

Chapter 247 - Doubts And Preparations