Harmless Obsession for the Captivating Male Lead - Chapter 5: Rosenia unconsciously held her breath the moment they made eye contact.

Julietta, born as an illegitimate child of a nobility, is raised in an opera theatre to hide away from the eyes of the noble’s main wife.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

The heroic person, with the ambition of the jackal, is a heroic person.

Astur Bader: The Brood of Alienation and Flesh, Lord of Death and Slavery.

When the two coexist together and wake up in the world of “ONE PIECE”, these heroes will rise together, and the magnificent sea will bury many bones. It is to become a pirate, to follow the current, to stand on the top of the tide; or to start from A tiny navy, hitting the water in mid-stream, conquering the wind and thunder of the four seas.

The pirate is realistic, the golden finger is the mother’s nest, similar to the nest of the interstellar zerg tyrants, and will gradually establish a base, the BOSS-type protagonist, does not follow the ship, and gradually climbs to the top by means of tricks, not smearing the straw hat group is only this, Enemy or friend only depends on the protagonist’s position at the time. There are right and wrong, but it is more beneficial. Realism is to create and restore the most real and cruel face of the pirate world on the basis of animation.

You can read it even if you haven’t read the original, it doesn’t matter.

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- Description from novelbuddy