I Became the Villain's Trainer - Chapter 9

The protagonist of the collapse of the three former civilizations is Dr. Mei. What is the end of logic, the strongest brain, super intelligence, this is the story of the strongest scientist of Honkai with knowledge of the moon becoming the god of science!

- Description from novelbuddy

After dying while trying to save the Hero's life, only to be abandoned by him the very next instant, Raven ends up before the goddess who'd given him as well as his party their powers. Having witnessed the Hero's failures, the Goddess and Raven strike a deal of mutual benefit. And what's the deal you ask? He has to take over the Hero's spot and strike the forces of evil out of her world. And his reward? The power to steal any woman of course!Revived with the power to seduce anyone no matter their relationship status, the biggest playboy adventurer begins his journey to rack up the highest body count throughout the world!Special Note: Uncensored character pics on my discord server, please join!Warnings:R18||Violence||BDSM||Heavy Netori Elements(Mc stealing other people's woman)

It’s been 10 years since I found myself in the game “War of Gods: Infinite Defense.”From being the illegitimate son of the Red Dragon family, I rose to become a prominent figure, but under my half-brother’s schemes, I eventually met my demise.[Game over] [Hidden Ending: The Secret of Ray Hatzfeld]However, I was given another chance.[Discovery of the hidden ending has unlocked a new story.] [Additional content is being downloaded.] [The story of Kane Rehinar, the Grand Duke of the Water Tiger family, begins.]Not as the illegitimate son of the Red Dragon family, but as the Grand Duke of an enemy nation!“Hatzfeld, this time I will make sure you die in the most painful way possible.”

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.