Something's Missing

As the crew started moving for the place where Vivi thought the Rebels were, Thirteen was moving in a different direction.

White sat on his shoulder as they skimmed the sand, flying in a random direction.

Suddenly!

The sand bulged and a giant purple beast shot out of the ground. It looked like a giant lizard, Thirteen didn't know what it was called, nor did he care.

He jumped into the air at the lizard and reeled his arm back. His arm turned sharp, his muscles and veins bulged, before he threw his fist forward at the giant lizard. Thirteen hit the lizard's head and blasted a massive hole right through it.

He flipped through the air and his arm returned to normal as he landed on the ground behind the falling beast.

A huge amount of sand got kicked up into the air and slowly settled.

White was panting as Thirteen shook his sweat filled arms, approaching the lizard and dragging it to the shade. He and White sat in the shade of a giant rock as Thirteen threw some wood onto the ground from the trees that were near the coast.

He rubbed his hands together as they increased in density, they started burning up and he grabbed a piece of wood, it immediately started smoking before bursting into flames.

He then stuck his hands into the cool sand and released his powers as White hopped around, happy they didn't have to eat fruits anymore. Thirteen pulled the lizard over and chopped at it, tearing the meat and roughly cutting it before roasting it over the fire.

White was given a huge piece of meat from the lizard's tail and he jumped on it, munching on it while hugging the meat and getting all greasy. Thirteen tore off handfuls of flesh before stuffing them into his mouth.

The two ate in silence for a while.

As they ate, Thirteen poked the air over and over with his finger hardened.

When they were done, Thirteen looked at the bones and then at White, who tilted his head at him.

A while later

Thirteen was running through the sand again while White tried to keep up. White was covered in bone armor. It looked like armor and it was made of bones that Thirteen carved with his sharper hands. The problem was that the bones were super heavy and White was already having a rough time in the desert heat.

Though, Thirteen was having a rough time in the desert too. He had never been anywhere hot like this, he didn't like the heat at all. He much preferred cold places like Drum Island.

White wasn't the only one training, Thirteen's tail was slapping the air behind him over and over again with the rest of the inside bones tied to it. He has trained his tail before, but compared to his arms and legs, it was severely lacking.

And so, one Half-Mink and one Armored Rabbit ran in the desert without any idea where they were going, just training together.

Fortunately, or unfortunately, the place they were heading to was Rainbase.

They were still a day away.

The entire time, they didn't stop training. Thirteen would kick his legs in the air at night, while poking the air, and increasing the density of everything in his body before reverting to normal.

He increased and reverted his density over and over again, adding stages like 5x Density, 10x, and 15x, which was his limit for right now. He was trying to practice his devil fruit to the point of perfection, where he could activate the required amount with just a thought. The interval between increasing was a few seconds.

He wanted to increase it to the limit in a split second. It was extremely difficult and required extremely fine control over his power to do it. He also felt that he was missing something. Something extremely huge, but he couldn't figure out what it was.

He also set another goal, having multiple parts of his body with different densities. Since he was a density human, the different densities in his body wouldn't affect him. His blood could be denser than his muscles but it would still flow.

He could, however, make his body too dense to the point where he can't even move. Thirteen called this 'Overclocking', he felt that this was still useful to him. Though he couldn't move when he Overclocked, he could still fall.

Maybe he could Overclock his fist as he fell from the sky, but it was risky because they could move out of the way and make him miss.

Though to Thirteen's defense, he was still working on understanding his powers. He even felt that this was far from what he was actually capable of achieving with this fruit. He didn't know what it was but he felt it, it was like a gut feeling that he could do more.

He decided to forget it and focus on his training, whatever it was, he couldn't do it right now. At least not with how little control he had over his fruit. He was still learning and more abilities would only slow the process.

Finally, after roughly a day, the duo arrived at Rainbase.

Thirteen looked up at the thriving city and whipped his tail, throwing the bones flying. They smashed into houses and shops. White hopped up and down, punching the air with his bone armor before jumping to Thirteen's shoulder as he dashed into the city with one goal.

Kill Crocodile.