MTL - Naruto Lineage Theory? Trash - Chapter 140

Chi Yan had always had a weak constitution, and ghosts had always tried to kill him. He had tried many ways to change his situation, but it was all futile.

Coincidentally, Third Master Ye of Shiming City passed away, and a priest informed Chi Yan that Third Master Ye possessed the “look of demon,” Carrying a bit of this man’s ashes and installing an altar for him at home could help control the evil spirits around Chi Yan.

Left with no choice, Chi Yan took a gamble. Amazingly, it worked. However he didn’t expect that he’d be instead be haunted by the most persistent ghost of them all.

Obsessed with love, undying resentment, possessed by evil.

- Description from Novelupdates

【Explosive Fantasy, Exhilarating Fiction】He had been beaten by his father into a cripple and kicked out of his home, yet he was the most badass genius in history. The Empress of the Divine World? She’s my woman! The Great Lord of the Demon World? He’s my disciple! The Dragon God of the Demon Realm? He’s my mount! Those who mess with Xu Nian will die! Those who touch Xu Nian’s Forbidden Lamella will wish they were dead!

Branded as the last remnants of evil.Once known as Cero Restes, now living under the name Gabby Magus walked into villain’s path. He swore to hunt every hero’s affiliated with the Dukedom of South in the kingdom of La Magia.Through a web of lies, manipulation, and ruthless strategy, he will rise—not as a savior, but as the villain hidden within the hero’s party.

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