Martial King's Retired Life - Chapter 90Book 15:

Dying after experiencing the cruel side of humanity, when Blake is transmigrated into a world of magic and flying dragons, he is fully focused on accomplishing his goals but then.[Ding! Welcome host to The Lust System.What is more fun than becoming more powerful as you have pleasure.]“That damned woman, what the hell is this, I'm here to conquer a realm, not play around” Blake thought, but he was immediately hit with another surprise,[Ding! Error, Failed to fully bond with host.....,, rebooting][Ding! welcome host to the Sinister System.]From a follower of Lilith to a target of the underworld, how is Blake going to explain to the rulers of hell that he now commands their sins.

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

After transmigrating into the Marvel-DC multiverse, he, once an ordinary person, has now become a world-renowned mercenary and assassin.Things have changed. Should he become a righteous hero, or continue his dark profession?“Don't use such shallow concepts like good and evil to judge me. I only do what I want.”Suddenly, the protagonist appeared behind the author of this synopsis, punched him, and sent him flying.“The truth is simple. I am the death knell that rings in everyone's ears!”

Everyone must have a few regrets in their lives, and for Mykel regret was publishing this novel on the internet. Because of this failed novel he wrote, made his career down the hill as an author. Thanks to this novel, he lost his passion and he lost everything that he had.

"I wish I can destroy this novel so that nobody will be able to see it or remember it anymore," Mykel said.

That was what he wished for, and for some reason, he went inside that novel of his and as himself in the story that didn't suppose to exist?

Mykel smirked and grinned as he looked at the system.

[You are the creator of this world, you will have the access to the command system. You are free to do anything as long as it is listed in the command system]
[Please enjoy and have fun]

"Heh, then I will turn this world upside down," Mykel said as he glared at the notification in front of him.