Chapter 601: An Experiment
He felt it the moment he registered the presence — not as a separate read, but as a quality in the reading itself. The specific wrongness he had encountered twice before in this forest, the partial obscuring of the essence signature that he had learned to associate with a particular blood type.
Another Null Demon.
Cerbe’s left head had already turned toward it but Damien raised his hand.
Cerbe stopped.
Aquila had oriented upward, the griffin’s response to a ground-level threat being to gain the altitude that gave it the approach angle it preferred. Damien’s hand signal reached it before it had fully committed to the ascent.
Aquila stopped.
The demon cleared the undergrowth and found what it had been approaching.
Four creatures of varying sizes and levels of menace, one of them carrying a person on its back, all of them stopped and regarding it.
The demon did not stop.
Damien dismounted.
Not because the engagement required him to be on foot — Fenrir could fight with him mounted and had done so in other engagements. But a Null Demon required a specific kind of attention, the kind that benefited from having his full body available rather than the partial constraints of a mounted position.
He moved toward it.
The demon met him directly, its approach the committed forward pressure of a Grade Four demon that had not yet encountered sufficient resistance to develop hesitation about direct engagement.
Its claws were extended, the strike pattern as it closed the distance reading as a two-stage attack — a high feint followed by a low committed strike, the kind of combination that worked well against opponents who responded to the feint.
He did not respond to the feint.
He stepped inside the committed low strike, the demon’s claws passing on the outside of his guard, and drove his palm into its side with the practiced entry that had become the dominant technique of the last several days.
The entry went clean.
Grade Four hide was harder than the Grade Five and Six range he had been working through but way softer than the Stormhorn had been, and his technique had been refined by enough repetitions that the resistance was manageable rather than significant. He found the depth he needed, found the core’s location, and began the process of extraction.
The demon’s counter arrived.
A clawed hand, the free one that the side entry had not blocked, raking across his forearm.
Not deep. His reinforcement absorbed the primary force, the claws skipping off the essence layer he maintained, but the contact was real and in the fraction of a second where the claws found his skin through a gap in the guard’s coverage, the demon’s blood made the transfer from its claws to him.
He felt it immediately.
Not pain. Not the immediate physical sensation of a wound or a burn. Something more fundamental — a reaction from his own essence that registered as urgency rather than damage, the way the body responded to intrusion at a level below ordinary injury.
His essence surged at the contact point, the automatic defense of a system recognizing something incompatible and working to expel it before the incompatibility had time to establish itself.
His essence was burning.
Not metaphorically. The conversion was running at a rate that was noticeably above his baseline, the life force pulling through his core faster than usual, the extra draw directed entirely at the contact point where the Null blood had touched his skin.
Drying it off.
Pushing it outward before it could seep through.
He maintained the extraction despite the distraction — the core was close, his fingers had the position, and interrupting the entry would cost more than the arm distraction required. He found the core, closed his fingers around it, pulled.
The demon dropped.
He looked at his forearm.
The contact point was visible — not as a wound, not as damage, just as the specific place where his essence had concentrated its response, the skin there carrying the faint warmth of the overdrive he had pushed through it.
The Null blood that had landed there was already gone. The essence burning had expelled it before it had time to do anything beyond the initial contact.
The essence burn was already slowing, the automatic defense response recognizing that the threat had been removed and reducing its output accordingly.
He looked at the demon’s body.
Then at his forearm.
Then at the demon’s body again.
He thought about the jar.
He thought about the ratio he had established with the first Null demon’s blood — ten drops of Null blood to three drops of Stormhorn blood to complete eradication. He thought about the test he had conducted, the boiling and the evaporation, the confirmation that the Stormhorn blood was exactly what Arielle had described.
He thought about what he did not yet know.
The Null blood as a weapon was not a question — the mechanism was clear, the effect documented, the means of countering it confirmed. He had the countermeasure stored in Luton’s Universal Space. He knew the ratio.
But he had not yet confirmed one thing.
He directed Luton to produce the jar.
The slime provided it from the Universal Space, the sealed container of Stormhorn blood passing from Luton’s interior into Damien’s hand with the ease of a transaction that had been performed multiple times now.
He opened it carefully.
Drew out a careful amount — eyeing the quantity, the same discipline he had applied in the first experiment — and let three drops fall onto a section of the demon’s exposed blood where it had pooled near the impact of the demon’s fall.
The boiling started immediately.
Same character as before. The Stormhorn blood finding the Null blood and engaging with it at the most fundamental level, the reaction working outward from each contact point, the churning surface consuming the Null blood within the radius of the three drops’ spread.
Twelve seconds.
Done.
He looked at what remained — the non-Null blood of the demon, untouched, the Stormhorn blood having targeted specifically rather than broadly.
The ratio held.
Three drops to ten. Approximately.
He sealed the jar and directed Luton to receive it.
He was about to stand when the thought arrived.
The same thought it had been the first time, the practical extension of what he was looking at — not the Stormhorn blood, not the eradication, but the other material.
The Null blood itself.
He had already established what it did and how to counter it. He had not yet established something adjacent to that question, something that would complete his understanding of the material and tell him what he actually wanted to know about its potential applications.
He produced a second empty jar from his own kit. Directed Luton to provide a sealed lid for it from the Universal Space.
The demon’s blood went into the jar without ceremony — carefully, with the same handling he had given the Stormhorn blood, the specific caution of someone who understood exactly what they were collecting and was not interested in the consequences of carelessness.
He sealed it.
Held it up.
The blood inside was dark. Not the distinctive dark of demonic blood in general — the kind of dark that came from the Null property, the slight visual quality of something that was not quite the color it appeared to be, absorbing light at the edges in a way that made the color uncertain.
He thought about where and when.
The image was clear enough that he did not need to develop it in detail. He knew the shape of the application, the specific context in which Null blood in the right delivery mechanism against the right target produced an outcome that nothing else in his current inventory could replicate.
Not now. The situation that called for it had not presented itself yet.
But it would.
He was reasonably certain of that.
He passed the sealed jar to Luton, the slime receiving it into the Universal Space alongside the Stormhorn blood. Two jars now. Separated, clearly distinguished, each one serving a function the other could not.
He stood.
Looked at the demon’s body.
The last test was not something he could conduct here. It required a live demon — specifically, a live demon that he could infect with the Null blood and then observe over the necessary period to confirm the progression rate and the countermeasure’s effectiveness under actual infection conditions rather than simple contact-evaporation tests. But most of all, the test was to confirm if the Null Blood was toxic to other demons as well.
It was not a test he could perform on a dead one.
He needed to find another demon.
Which meant the tour had acquired a secondary objective alongside its original unhurried character. He was still not rushing to the seventh altar. He was still riding without urgency, still letting the forest present itself at its own pace.
But somewhere in the remaining distance to the forest’s edge, he was hoping the forest would present him with one more demon.
A live one.
He mounted Fenrir.
Luton settled on his head.
"Move," Damien said.
Fenrir moved.
The forest received them again, the path northeast continuing, the seventh altar waiting at the forest’s edge.
Damien rode through the trees with two jars stored in a slime on his head and a final test in mind and the particular patience of someone who knew what they were looking for and was in no hurry because the forest still had ground to cover and ground had a way of producing what you were looking for if you gave it enough time.