The Portal of Wonderland - Volume 2, Chapter 403 By My Own Means

[Congratulations! You are the Pioneer of the Mutation Abyss. Brace yourself - The Apocalypse begins now…][Main Quest: Eliminate Fellow Survivors][Description: The strong will thrive, and the weak will perish]Theo was never lucky. Bullied for his appearance and always underestimated, he lived his life as a pushover. But everything changed the night a meteorite struck him. His life takes a drastic turn.Chosen by the Mutation Abyss, he gains access to a mysterious system, granting him an evolutionary advantage.The world is doomed. An infection is spreading, turning the world into a deadly battleground. As the human Infectees mutate and portals to unknown realms open, otherworldly forces threaten humanity’s survival.Theo must harness his new abilities to survive in this brutal world. But in a place where strength is everything, will Theo keep his humanity, or become something worse?

Rise Lee, a well-known A-rank esper in the federation. He was even ranked as one of the strongest among the A-ranks and recognized as one of the hopes for humanity. However, he wasn't only famous because of his prowess or his attractive appearance; Rise was more infamous because of his terrible personality. He was called a villain by most guides and espers for a reason.And who would guess that Rise Lee was really a villain, in a literal sense? The terrible truth then unfolded to him. He, Rise Lee, is one of the main villains of the novel. Rise Lee spat out a mouthful of curses and swore that if he had a second chance, he would mess up this damn novel until everyone went down with him. If the author was in front of him, he too would be destroyed with him! And a second chance did come! Rise Lee, the villain, woke up five years before the main storyline! Heh. So what if he was a villain destined to die? That protagonist who killed him, and the author... He would screw them over. Being a villain, be damned. In this rebirth, he would take and mess up everything. What did you say? The protagonist’s love life? Heh. That too. Rise would take his lover. The male lead... will be his.

There are a total of seven sins, and a revelation is made to a young man named Alex that he is destined to become a demon lord, more especially a demon lord of sin called LUST.

It's not like he can change that and because he always knew something about himself was different—not in a physical sense, well, maybe a little—and not in a mental sense—but rather because he is thrown into a demonic war that compels him to accept his new reality.

He was only aware of a difference in himself. Relating to him and the ladies who are drawn to him... Well, it was more or less like he was a magnet in front of all the girls, and all the girls were drawn to him like a metal.

It’s a affair between a loyal dog servant and his master.

- Description from Novelupdates