In Naruto as Zhongli - Chapter 72: INAZ - 71

A striking man of mysterious origin and peerless talent, he looks back at the world, in all its entirety, with utter disdain. And yet, in the treacherous and unpredictable ultimate formation of the Boundless Secular World, he guards a breathtaking ancient qin with broken strings, waiting silently for the destined one to arrive!

A boy encounters him, and knows for the first time that the world beneath the Heavens is a fickle place. Not even demons, devils, ghosts and monsters can match the frivolity of human nature!

A slender physique, and jade-like beauty, but the sword that strikes between heaven and earth is not unlike a streaming rainbow!

The vastness of the starry sky, the seven emotions and six desires! Greed, anger and ignorance! The teachings of Buddha will grant you boundless strength!

A sea of blood will come, at the cost of all mortal beings full of honest hope!

The ghosts wail as the gods roar, but the sea of blood has no end!

Where, pray tell, is the path I should take?

Since there is no path, no matter how bitter and bloody the sea, even if my boat is made out of bones, I will soar to the heavens above!

- Description from Novelupdates

After retiring from the special forces, Ye Tian is hired by a beautiful boss as her personal bodyguard, leading to a colorful and adventurous life for him...

Magic finally reached planet earth, but it was not like we expected. It came in the form of mystic energy!

After the age of awakening, all living things finally entered the path of evolution.

Mystic Beasts invaded earth, destroying the world as we knew it, but we survived as we finally gained the ability to utilize the energy that the beasts came with.

Mystic Warriors were born, and humanity finally found a moment of reprieve, but the Mystic Beasts were still winning.

Rex Vector, an apparently mystic energy-deficient sword genius who lost everything to the war turned out to be the last inheritor of an Ancient Bloodline.

On fully awakening his bloodline he was granted a system and his whole life changed for the better.

Life held much more in store for him though as the contents of his first system mission revealed a reality to him that he wasn’t sure he wanted to accept.

[You are hungry!]

[You must drink human blood within 24 hours!]

[Penalty for mission failure: Death!]

Talent? Unnecessary! Wealth? Doesn’t matter! Brain? Eat it!

Even if one was the greatest of gutter trashes with zero redeemable qualities, as long as they had a System, they are bound to reach the pinnacle of life.

Compass Carburettor, a dirt-poor orphan with absolutely zero f**king qualities managed to reach the peak of the business world by the age of 35, all while relying on his Money-Making System like a blinded barnacle.

But at the peak of his life, he was betrayed by his System.