Global Reincarnation: Only I Know the Plot - Chapter 55:

In a world steeped in tradition and shadowed by secrets, a young girl’s life is torn apart when her family is destroyed, and her heritage stolen. Her father, in his final act, seals away a legendary power and treasure, leaving her with nothing but cryptic clues and a burning desire for vengeance.With a blade in her hand and rage in her heart, she embarks on a perilous journey, unraveling the dark conspiracies that surround her family's legacy. As she faces deadly foes and unearths long-buried truths, she must decide whether to unlock the immense power her father protected—or let it remain hidden.Her path is one of blood, betrayal, and redemption. Will she rise above the chaos, or will the weight of revenge consume her? Witness the making of a legend in this gripping tale of sacrifice and retribution.

Once through the pirates, Lu En became the son of Monkey d Dragon, a grandfather named Monkey d Karp, and an unreliable and neurotic younger brother named Luffy.

Fortunately, the ghost back system is activated!

The completion of the ghost back is 10%, and the training effect is increased by 100 times!

The completion of the ghost back is 20%, and the training effect is increased by 1000 times!

…

One day, Lu En, a ghost-backed master, appeared in front of Luffy who was shouting to go to sea, and made Luffy cry on the spot.

Luffy: “The pirates in the sea are all monsters like my brother? I don’t want to go out to sea!”

Garp: “For a long time, the two boys, Long and Luffy, with small arms and calves, I really doubt that they are not my sons and grandsons. Like Lu En, they are the grandsons of the old man!”

Warring States: “The strongest creature in the sea, land and air is Kaido? No, it’s Lu En!”

- Description from novelbuddy

Like every (Isekai) protagonist, I got reincarnated after getting hit by a hyper-speed truck.

That was an empty and dark life anyway, so I was already looking forward to a decent, unknown afterlife.

But... the world had a unique thing in mind.

In this new world, I had parents, amazing ones at that.

My father was a talented mage, and my lovely mother was a sharp and cunning merchant.

Ignoring all of my weirdness, they loved me unconditionally.

This was the life that anyone would love.

Eating and cooking delicious food, practicing archery and magic, and playing with my parents.

Everything was wonderful until... those demons separated us and it left me in a ferocious forbidden forest, just to be eaten alive by beasts.

But dying wasn't even a question.

I will go back… to them.

Forget about moving to the other side of the world and starting over.The Apocalypse is here!As the only survivor of the Tutorial Quest in his area, Elijah awakens the Class of “Depraved Hero”, an ominous-sounding Class with a Legendary Rank!Additionally, because of the insane difficulty as well as his Clear Rank, he gains the Skills that, according to the mysterious figure that is the Administrator, he needs most.[You have Developed the Skill “Absolute Authority[A]”.][You have Developed the Skill “Slave Mark[C]”.]