Born of Karma...!

"Changed its direction? Is this Mirai Uchiha's Devil Fruit ability? Good, good, very good, excellent!"

Blackbeard, hidden among the crowd, had a sharp gleam in his eyes as he looked at Rin as though admiring a work of art. Ever since setting sail, he had made a plan for himself: no matter what, he had to obtain the Dark-Dark Fruit. That was why he had joined the Whitebeard Pirates. In the Grand Line, before Mirai Uchiha rose to prominence, Whitebeard had undoubtedly been someone even the Navy and World Government did not dare provoke lightly. Following such a powerful pirate crew greatly increased his chances of obtaining the Dark-Dark Fruit. However, after boarding Whitebeard's ship, a second plan had arisen in his heart. That was to seize Whitebeard's Tremor-Tremor Fruit ability. He had once witnessed Whitebeard throw a single punch and make rivers and seas flow backward, and ever since, he had coveted the Tremor-Tremor Fruit.

The Dark-Dark Fruit's ability was relatively simple, yet extremely special at the same time. Devouring—that was the Dark-Dark Fruit's defining trait. It devoured everything it touched completely, then turned what it devoured into something for its own use. That was why Blackbeard planned to take Whitebeard's Devil Fruit. As far as Devil Fruits went, Mirai's Change-Change Fruit had similarities to the Dark-Dark Fruit. It had no flashy abilities, only a single characteristic. The Dark-Dark Fruit devoured, while Mirai's Change-Change Fruit changed. Though each had only one trait, they encompassed all things—one devoured everything, while the other changed everything. If there was a single natural enemy of the Dark-Dark Fruit in this world, it was probably Mirai's Change-Change Fruit.

"Hahaha! Brat Mirai, your Devil Fruit really is powerful. Since obtaining the Tremor-Tremor Fruit, this is the first time anyone has redirected my power. Not bad.