MTL - I, The System Maker! - Chapter 79

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

Standing before you is:The overseer and protector of darkness,The subverter and remolder of order,The creator and persecutor of bootlickers,The supreme actress and drama queen, the goddess of the night, the nightmare of gods and the gravedigger,The true ancestor of blood—Charlotte de Castel.Accompanied by madness, born from blood, hand in hand with curses, walking with destruction.This is a legend belonging to the bloodsuckers…[Transformation][Rare-bloodline][Lord][Kingdom-building][Behind-The-Scenes][Deification]

Her – a glutton without troubles or worries who crossed over and became a young fat chick with a deep vengefulness.