There were many systems of power in the pirate world: Devil Fruits, swordsmanship, technology, Haki, and all kinds of other strange abilities.
But in Chaos's eyes, Haki was the most versatile of them all.
His Haki had now reached its peak. If he could multiply it, who in this world could stand against him?
The key was that this multiplication didn't seem limited to twofold or threefold. With further development, it might reach fiftyfold or even a hundredfold.
It could boost everything: attacks, speed, and defense!
If his power was one, multiplying it a hundredfold would make it 100; a thousandfold would make it 1,000. As long as he could meet the conditions, he could just keep multiplying it.
To boldly speculate, he might eventually reach the point where one punch could destroy a planet.
The more he thought about it, the more possible it seemed.
But he still needed to test it. At the very least, he had to find out whether the Growth-Growth Fruit could multiply Haki. If it could, then this Devil Fruit was undoubtedly the best choice.
If it couldn't, he would have to keep considering his options.
In the original story, World seemed to be able to boost things by at most a hundredfold. It didn't seem as powerful as he'd imagined—at least, it fell far short of what he had in mind.
Then there was the Time-Time Fruit.
Ever since Toki died, that Devil Fruit hadn't appeared again.
Unfortunately, it could only send people into the future. That had nothing to do with abilities like stopping or accelerating time, which was what he'd imagined.
No.
He had to be cautious. Extremely cautious.
The Door-Door Fruit, Hobby-Hobby Fruit, Slow-Slow Fruit, and Growth-Growth Fruit were powerful, but they weren't comprehensive. They all seemed to have shortcomings.