"I can't believe you're thinking of that right now and your level of trust is still questionable," Red Son said. Not that he was planning anything devious, but it had to be said.

Okay. Okay. Healing he can do. And the ability was supposed to be purifying a liquid, not necessarily water. So in theory he just needs to get rid of impurities in the blood. He just had to watch it that he didn't purify too much. How best to monitor that-

Oh.

Hm.

Well, it would give him a base.

He holds his hand to the side, encasing it in fire for a few moments, sterilizing it. "Sorry," he said before swiping his fingers over the wound, gathering the blood and sticking his fingers in his mouth, closing his eyes, focusing on the taste. What doesn't belong, what doesn't-

That. A weird acidic taste, that isn't normal in blood.

Another fire sterilization, moving his hand near the wound, focusing on purifying the odd taste that he's mostly sure is the poison, alternating with healing to counter any thinning of his blood.