MTL - The Troubleshooting Diary at Hogwarts - Chapter 7 December 23 snow

Apollo Kaiser, a boy who bore the unlucky fate of being unable to grow strong, was condemned by his family.

Discarded by his mother and abused by others, Apollo gives in to his rage.

However, this action results in his death. Many would believe it to be the end, but Apollo's death was a required catalyst.

The Demon Monarch System finds its heir and attaches to his soul, bringing him to a new world where he starts his journey to supremacy.

This difficult journey rife with conflict, conquest, and brutality shall serve as Apollo's temperance.

Watch as the heir of the Demon Monarch rises above all, conquers Sin, subjugates unthinkable enemies, and even brings about the destruction of worlds!

The rise of the next Demon Monarch begins...

As an underworld boss who has been in the ladder all the year round, You Feng specially uses various non-mainstream underworld decks to climb to the duel king of the ladder in one go.

Also known as a cancer.

I didn’t expect to cross into the mixed world of DM, GX and 5DS!

You Feng defeated the major powerhouses with absolute capital, seized their cards, and then began to research and combine all kinds of fancy tumor card groups.

The most important thing is that such a tumor, the guardian spirit is still the creator god of light! !

“Is this the God of Creation of Light? What!! It turned out to be You Feng’s?” Muto Game.

“You call the cancer a **** god?” Haima Lairen’s mouth twitched.

“I never take the initiative to pull out screws! Except for facing You Feng! It’s too poisonous.” Do not move Yu Xing.

“What kind of dark dueling elf, how can You Feng be scary?” Youcheng Shidai.

- Description from novelbuddy

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.