Within a Hollow Heart - Chapter 123: Volume 2, : “Cracks in Reality”

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

"In her previous life, she is used by her first love to send her own company into the tiger's den. She becomes bankrupt, gets kicked out of the house by her father, and becomes the target of ridicule by the family. Worst of all, she believes her best friend's lies, thinking that everything was done by her ‘husband’. Under her best friend's ploys, she almost kills him and is ultimately sentenced to prison, where she dies of depression.

In the Great Age of Pirates, countless people rushed to the sea.

The person who obtained Arceus’ power arrived in this world as the new Arceus and got in touch with the Lunarian race.

Based on the reality that everything can be Mythical Zoan, the current him can also be called Mythical Zoan user.

Whether it is One Piece or Pirate King, it has nothing to do with him, all he wants to do is to retrieve the lost plates first.

During this process, he formed an alliance with Beasts Pirates, a famous pirate crew in the New World, and Mr. Kaido got his coveted Mythical Zoan Army.

When Pteranodon becomes Aerodactyl, when Brachiosaurus becomes Tropius, the combination of Pokémon and devil fruit powers will bring a whole new change to the world….

Lunarian’s glory will surely reappear.

Before his death, he was the only sword cultivator in the whole world, who dedicated his entire life to the path of sword immortality.

When he opened his eyes again, the world had completely changed. He began to cultivate the path of sword immortality again, slaying the heavenly way, shattering the universe with his will, and achieving the realm of sword immortality!

- Description from Novelupdates