All My Powers Come from Ghosts

In a parallel world, evil ghosts are resurrected and demons are rampant. The three holy lands, nine aristocratic families, and martial arts experts guard the last line of defense of the human race. Lin Bei traveled through time and awakened the God-killing Sword's main system - by killing monsters and monsters, he could seize the opponent's strongest ability, and even fuse and evolve multiple abilities. Kill the hundred-year-old hanged ghost and get the [Suffocating Ghost Realm]; kill the blood-moon wolf demon and get the [blood-moon demon pupil]; kill the thousand-year-old zombie king and get the [immortal zombie body]... The ghost realm merged with the demon pupil and evolved into the [Pluto Realm]; the zombie body merged with the Vajra body and evolved into the [Immortal Overlord Body]. Every time he kills a fierce ghost, the system will reveal the origin and life story behind it - the wronged soul of the general, the ghost in red, the thousand-year-old corpse king. Behind each ghost is a dust-covered epic of blood and tears. When aristocratic families were still fighting for resources, and when the Holy Land was still clinging to its old ways, a down-and-out young man who had been kicked out of his home had quietly struck out a sword in the urban jungle late at night that would overturn the world. "If you want to protect your family, you need strength; if you want strength, kill monsters!" "The monsters and monsters in all the worlds are the nourishment for me, Lin Bei, to become stronger!"