"Argh…!" he choked, grimacing in pain as the powerful surge of healing was perhaps the only thing that was preventing him from rapidly falling to death. The Transcendent esoteric restored his body and his flesh and tissue before the negatrons began sabotaging his biochemistry in a way that his body had never dealt with before.
Poisons didn't work through any one principle; anything that disrupted the biochemistry in the body in any way was, well, a poison. It was just that his Body was so immune to poison, thanks to the Gu inoculation, that nothing ordinary could possibly even begin to threaten him.
The issue was that negatrons were special even within esoteric matter, containing negative energy, something that his body had never ever dealt with before, making for a light potent disruptor of Rui's biochemistry.
