Fairy Tail: Collapsing Stars - Chapter 227: A Pact with Anna

Crossing to One Piece world, he became Roger’s younger brother.

Unexpectedly, Gol-D-Roger who was in his fifties had a teenage brother. But he was so weak.

Fortunately, at the age of sixteen, he actually found himself with a possession soul system.

He had attached to the master IP man, also to the White Phoenix and to Ge Nie with his strong ability of the Hundred Step Flying Sword.

If you think that he can only Purchase these? Then you’re wrong!

Pain, Itachi, Ichigo Kurosaki, as long as there is money, any soul can be Purchased.

- Description from Novelupdates

After an ominous prophesy is discovered, the swordsmen of the kingdom of Ensis must band together to avoid the fate that has already been foretold.

The world ends in a single moment.When the Mass Outbreak Event shatters reality, portals tear open across the globe, unleashing monsters that drive civilization to collapse. As cities burn and order crumbles, a game-like System activates across humanity, granting survivors levels, skills, and abilities, and forcing the world into a brutal new set of rules.Eighteen-year-old Jagger Ashton is dragged into this new reality where monsters are only part of the danger. Humans, twisted by power, fear, and desperation, prove just as deadly. Every encounter pushes Jagger closer to the edge, testing his sanity and the fragile line between control and corruption.Jagger begins to uncover a terrifying truth.The Outbreak was not just an invasion. It was a selection process.The System is preparing the world for something far worse.And whatever is coming… it wants strong survivors.To survive what lies ahead, Jagger must confront the power festering inside him and choose whether to master it or surrender to it entirely.

Reborn and returning, he possesses medical skills, can practice immortality, has a slave who is the king of killers, and a maid who is the school beauty pursued by everyone. Even casually taking out a piece of trash can shock the world. His return has set this world ablaze.