My clone invades all realms

He transmigrated to the world of One Piece, becoming a slave of the Celestial Dragons, walking a tightrope. One wrong step and he'd be plunged into the abyss. To protect himself, to gain freedom, he had to fight. Luckily, he could access countless worlds. He traveled to these worlds using clones. Demon Slayer Roa: "Can Muzan withstand the flying slash of a swordsman?" Hunter Roa: "Is the Dark Continent more terrifying than me?" D.Gray-man Roa: "Muzan, must demons be controlled by Noah? Can demons become gods?" A virus named Roa is rapidly invading countless worlds. Roa: "I am the chosen one."