NoWoRRyMaN

[His Strength is Unmatched And His Powers Unparalleled; His Existence Unequaled And He is... Unrivaled.] 
____
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.
======
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. 

=====
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.

Support the novel with power stones.

Disclaimer- I don't own the cover.

Unrivaled Demon's Odyssey

Within the mist, a red pair of eyes glowed. The air turned cold, almost wet, and the temperature started freezing.

It had two huge horns and enormous wings.  It flapped its wings once, and the people around were thrown flying to the trees, walls, and mountains.

It had dozens of tentacles on its face, making a shape like a beard.

Its size was colossal even though half of its body was under the water— and it could submerge the entire island with one hit.

"It's a fucking Cthulhu," Nero asserted.

"Um… what is Cthulhu?" Emilia asked with a confused and curious look on her face.

"Cthulhu are considered as celestial beings, and they are rarely seen," Sophia answered. "They reside deep within the water, secluded from the world."

"So why is it… here?" Asteria muttered.

"They are strong beings, almost undefeatable," Sophia added.