Obviously, pure black magic water is a good thing.
But, the only downside is that there's too little of it. Apart from the one that was absorbed by Casio, there are only eight left on the ground.
Which probably won't last long.
He promptly turned his attention to Number Five on the ground, benignly approached him. A minute later, Number Five, whose body was soft even to the bones, only had a hard mouth. However, here, a hard mouth doesn't refer to refusing to reveal the secrets of the Skull Organization.
He did reveal the secrets of the Skull Organization, yet, he kept murmuring that when Numbers Two and Four heard the noise they would rush over to slaughter Casio. To which, Casio rudely informed him.
Numbers Two and Four had already been killed by him a while ago, they couldn't come to rescue him. If he didn't believe it, he could take Number Five out to see the hideous corpses of his two elder brothers later. One of them was beaten into a pulp, the other torn in half.