Naruto System in One Piece - Chapter 19

Chen Chao dreamt of becoming a powerful immortal cultivator, flying on his sword and vanquishing enemies with daoist magic. His hopes were dashed when he discovered that he had absolutely no talent for immortal cultivation.

Refusing to submit to his fate, Chen Chao joined the ranks of countless other talentless martial artists and embarked on the path of martial cultivation, a path scorned by the immortal cultivators.

In this era of strife where martial cultivators, immortal cultivators, and demonic cultivators wrestled for hegemony, Chen Chao will either rise to the top or fall into eternal damnation.

An intelligence error caused the Third Fleet to face an ambush. In order to divert his enemies, the imperial admiral drove the starship alone into the meteorite band, and his spiritual power fell into a coma under heavy blows.
With the help of mystical powers, he began to experience reincarnation again and again to repair his spiritual power.
Therefore, after “death”, when he opened his eyes again, he became a blind and frail young master who’s parents both died and was about to be stripped of all his property by his uncle and aunt.

He Yan: ….first get rid of this group of bad relatives then talk (╯‵□′)╯︵┻━┻

Wait… This patriach, you’re clearly not part of the plot?

- Description from Novelupdates

Chen An traveled to the world of cultivating immortals, and his cultivation talent was extremely poor. He was stuck in the third level of Qi refining for many years and could not make further progress.

Seeing that there is no hope of cultivating immortality, he chooses to return to ordinary life, and marries a wife to enjoy the ordinary happiness.

As a result, on the night of their marriage, they returned to the fairyland overnight.

It turned out that marrying a wife and enjoying ordinary pleasures was his way to become a fairy, and it could directly save him thousands of years of detours.

- Description from novelbuddy

Frascoia Continent… Various races like Celestials, Demons, Humans, Monsters, Elves, Dwarves, and so on occupied this continent.

Humans and the other races lived on the mainland of the continent while the Celestials and Demons lived in Heaven and Purgatory, respectively.

Within the Demons, a prodigy named Azaroth rose quickly, even by demons' standards, to the point of being dubbed a Demon God. There was only one person above him within the demons: The Great Demon Venerable, the Demons' Supreme Godfather.

Azaroth's extraordinary talent never had the chance to blossom to its full potential; a terrible calamity struck him down and he died soon after. But was this calamity just misfortune or was it hiding an opportunity for him?

Near his deathbed, he prepared for his future ascent to achieve his lofty goal.

Millions of years had passed after Demon God Azaroth's demise and now a young aristocrat called Edwin Rhodes came across a mysterious cave.