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

"Listen, you mutts, if you want to live in this mortal realm, then you must obey my three orders!"

All the demons got on their knees and lowered their heads at Nero.

"Rule number one: Never harm or even think about harming any mortals. Rule number two: you must obey every word of Queen Leto. And last, rule number three: Never raise your gaze or even look at Leto, or you shall face my wrath."

A demon nudged the demon sitting beside him and asked, "What would he do if we break any of these rules?"

"He will kill us," the demon replied.

"I won't kill you. Death is nothing but an easy way to escape life. The punishment I will give you would be much worse than death, an endless suffering for eternity," Nero asserted in a demonic voice.

Everyone, including Sophia around Nero, gulped down in fear, but there was Emilia, who couldn't read the atmosphere and kept glaring at Nero.

All Hail The Olympian