NoWoRRyMaN

[His Strength is Unmatched And His Powers Unparalleled; His Existence Unequaled And He is... Unrivaled.] 
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After getting stabbed to death by his girlfriend, Zane was reincarnated as Zeus— a half-demon, half-vampire. When he was one year old, he lost his parents, his castle, everything— because of the Gods and Heavens. Surviving his cruel fate, he lived among humans as one of them by hiding his true identity. 

Even though his life was nothing but suffering, he considered it as perfect; he had friends, a seemingly faithful lover, and the power to protect the world from any evil. With his limitless power, he could easily dominate the world, and neither Heaven nor Hell could stop his growth, but he chose the righteous path. However, for unknown reasons, he was betrayed and sealed to a deep slumber.

After being sealed for eternity, Zeus woke up in a mysterious dungeon to find the person who broke his seal— a half-angel beauty at death's door.

The day of his awakening, he swore that he will get his revenge and reclaim what he has lost—that is everything. Join this lonely demon on his Odyssey and watch him become the one and only— Unrivaled Demon; where no existence can equal him and no entity can defy him.
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Note:- As the title of the novel says, the MC is extremely OP and knowledgeable from the start. He will have some trust issues because of what happened in the past, but no useless drama.

The Story development is slow but the story is not slow-paced. I believe character development, and building the plot is important than writing things that don't make sense. 

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The characters' names and relations in the novel are based on greek, Norse, Egyptian, and other mythologies, but they are not accurate as they should be. I have made some changes as per my choices, and this is just fiction.

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Disclaimer- I don't own the cover.

Unrivaled Demon's Odyssey

Nero stretched his hand in the air and yawned loudly. He then looked at his body and muttered, "My demonic powers are taking a toll on me."

He turned around and walked to the severed limbs of Norox that he cleaved before making him the 'Wheel of Fire'.

As he looked at the limbs, suddenly, a slab fell from the ceiling on Nero. Although it was shattered into pieces even before it could hit Nero, Nero found it odd how this palace was designed ideally as a defense type.

According to the prophecy, a demon was supposed to kill Norox when he turned 32 years old. Meaning, it was Norox's birthday today, but there was no celebration like any other Wheatly person would do.

'It looks like Norox wasn't prepared for this, even after building a defense-type castle. He knew he was going to get killed by a demon today, but he was completely oblivious about it. Almost as if he never took the prophecy seriously.'

Summoning A Demon From Hell