The fragment routed for eleven minutes.
Sera tracked it through the gold interface with the reduced resolution of eleven centimeters of dead tissue — still enough to follow the compound's data, still enough to read the integration point's architecture. The divine-class material arriving in the compound's territory behaved differently from anything the compound had previously incorporated. Not hostile — the compound's conversion architecture was designed to absorb foreign materials, and it was absorbing. But the frequency characteristics of the material didn't resolve into the compound's standard processing format.
The compound processed it the way it processed the entity's archive transmission — not converting it into compound architecture, but storing it as distinct data within a separate partition. A divine-class structure inside the compound's territory, maintained in its own frequency domain.
She could feel the compound working around it. Adapting. Building interface layers between its own molecular architecture and something that its entire design hadn't been built to hold.
Min-su was still at the hull.
He'd been at the hull since the fragment started routing, both hands flat, the gold channels at their highest processing state, and he hadn't moved in eleven minutes. Not communicating — she wasn't getting navigation signals from him, wasn't getting the signal quality improvement that came when he was actively directing the compound. He was receiving. Something in the divine-class material's frequency domain was routing through him.
She watched his channels.
At the nine-minute mark, the channels' luminescence changed character. It had always been the steady pulse she'd gotten used to over five weeks — the compound's processing rhythm, constant and measurable. Now it became something irregular. Something with a larger amplitude, longer cycles, the kind of rhythm that belonged to a different architecture entirely.
The entity's frequency.
She reached for his shoulder and stopped herself. Touching him during a deep connection state could interrupt the signal pathway in ways that the compound had flagged as potentially disruptive. She'd learned this in the fourth week of his enhancement sessions. She stood behind him with her gold hand raised and waited.
The routing finished at 2104.
The fragment's distribution resolved into its three channels: compound territory, entity territory, System monitoring pathways. The geological event of the past eleven minutes concluded in whatever way geological events concluded — not with a discrete ending but with the signal density at the integration point dropping from active routing levels to stable occupation levels.
The compound held what it had captured.
Min-su didn't move.
"Min-su." She said it at full volume. Not a shout — direct. Present.
His hands stayed on the hull.
"Min-su."
The gold channels were still running at the entity's frequency rhythm. Not fading back to the compound's baseline. The entity's signal, which had been something he received during the navigation sessions and something that faded to background in between — it wasn't fading. The channels were maintaining the active state without active input from him.
Six minutes since the routing ended.
Seven.
She made a decision and touched his shoulder. The compound registered the contact through the gold tissue and confirmed his physical status was normal — cardiac, respiratory, neurological output all within parameters. He was physically fine.
He was just elsewhere.
"Min-su." This time she put her hand on his neck, above the channels, where the compound's tissue interfaced with his natural nervous system. The compound accepted the input and sent a signal through its architecture.
At 2111, his hands lifted off the hull. Both of them at once, slow, the way someone surfaced from deep water — against a pressure he had to overcome, not freely.
He turned.
His eyes. She'd been looking for this and was still unprepared for it. Not the unfocused quality of the navigation state. Something different. Something that was his and also had a layer that was not his.
"How long," he said.
"Seven minutes after the routing ended." She kept her hand on his neck. The compound's signal through the tissue steady. "The fragment distributed. The compound captured its share."
He looked at his hands. The gold channels on his arms, from wrist to shoulder. He moved his fingers with the deliberate quality of someone verifying function.
"The entity used me," he said.
"Used your gold tissue as a relay node during the routing. Yes. I think the divine-class material's frequency domain was too high-intensity for the compound's architecture to receive directly — the entity routed it through you first, buffered it through your compound tissue's translation capacity, before delivering it to the compound's partition."
He looked at the hull. "It felt like something went through me."
"Something did."
He was quiet. She could still feel the gold channels running the entity's frequency rhythm under her hand. Not the compound's standard pulse. The other thing.
"It's not going away," he said.
"I know."
He looked at her. The layer in his eyes that wasn't his had a character that wasn't hostile or afraid. It was — present. The quality of continuous attention. Something that had been paying attention to him since the routing event and hadn't stopped.
"Is this what you feel?" he asked. "The compound. All the time."
She thought about the gold tissue in her palm and fingers. The compound's signal in her nervous system, the constant data feed, the background awareness of the compound's territory two thousand four hundred meters below. She'd lived with this for five weeks. It had stopped feeling like an addition a long time ago.
"Something like it," she said.
He sat down on the deck. Not weakness — a deliberate decision. He sat and looked at the East Sea and let the entity's frequency run through the channels in his arms and didn't try to stop it.
"It won't interfere with function," she said.
"I know." He looked at his hands again. "The entity is — it's curious about me. The same way it's curious about the compound. I can feel the curiosity. It's not threatening. It's just—" He paused. "It's permanent."
The word landed.
Permanent.
She'd done this to him. She'd asked him to navigate, asked him to relay, asked him to be present and willing at every stage of this operation, and the result was that he was now connected to a seventeen-thousand-year-old geological intelligence in a way that was apparently irreversible.
She looked at the dark section in her left arm. Eleven centimeters. The firewall had held and the partial damage had held too.
"We'll work out what it means," she said.
"I know." He didn't say anything else for a long moment. "What did we get?"
---
The assessment took Kang two hours.
The physicist worked through the compound's partition data with the oscilloscope relay and the gold interface's translation layer, building frequency diagrams that spread across three tables' worth of graph paper by the time he'd mapped the outermost layer of the fragment's captured material.
"The outermost frequency layer is the entity's primer architecture," he said. "Fully accessible through the compound's interface. The compound can translate it — I can translate it. It's the routing signal, the return data, the homing architecture the fragment has been carrying throughout its transit. What the entity built the receiver to receive."
"And the middle layer?"
"Partially accessible. The compound's partition is holding forty-three percent of the integration point geometry, which gives partial coverage of the middle layer's distribution." He traced the frequency diagram. "The middle layer is data. Structured information in a frequency domain the compound can read in fragments. We'll need significant processing time to reconstruct the complete middle layer from the partial capture." He looked up. "But it's there. It's accessible."
"The innermost layer."
He cleaned his glasses. Replaced them. "No. The innermost layer requires complete coverage of the integration point. We have forty-three percent." He paused. "The compound is holding divine-class material — the outermost and middle layers are divine-class by any definition. The innermost layer is something above that classification. The frequency domain I've been describing as 'prior to substrate.' We don't have it."
"We have two layers out of three."
"Yes." His voice was the voice of a scientist who'd made peace with partial outcomes. "Two layers of divine-class material, fully recoverable through the compound's interface architecture. The innermost layer—" He paused. "The innermost layer is in the entity's territory and the System's monitoring nodes. We don't have access to those portions."
Sera looked at the frequency diagrams. Two layers of the fragment. Not the full picture — not what she'd come here for, exactly. But what she'd come here for had always been "enough to work with," not "complete."
The outermost layer: the entity's primer frequency. The return signal. She could already see the brewing applications — a frequency-based guidance compound, something that used the primer architecture to direct other materials. A tracker. A navigator.
The middle layer: data. Information the fragment had accumulated in transit. She didn't know what that information was yet. But divine-class data, recoverable and accessible, was an ingredient she'd never had before.
"We have it," she said.
Hwang appeared in the laboratory doorway at 0110. The colonel had been at the operations center managing the six nations' naval assets while the recovery was ongoing, extracting the *Cheonhae* from the post-impact observation zone with the specific efficiency of someone who knew that staying too long would invite questions she wasn't ready to answer.
"The compound's data from the integration point is stable," Hwang said. "The entity's geological network shows the bilateral architecture established and functioning. The Japan Basin receiver's post-impact geological signature is logged by the Japanese research buoys." A pause. "We have the fragment's recovery data?"
"Two of three frequency layers. Accessible through the compound's interface."
Hwang processed this. "Sufficient for your research objectives?"
"Sufficient for Arc 2's purposes." Sera looked at the dark section of her arm, then looked away. "We have what I came for."
Hwang looked at the graph paper spread across the tables. The frequency diagrams. The physicist's careful notations on materials that didn't have a classification in any known database.
"And Min-su," Hwang said. Not a question.
Sera turned.
Min-su was visible through the laboratory door, on the corridor bench, sitting with his hands on his knees and his head tilted slightly as if he were listening to something at the edge of hearing. The entity's frequency in the gold channels of his arms, running their longer rhythmic pattern.
"What happened to him?" Hwang asked.
"He was the relay node during the fragment routing." Sera looked at the dark section again. Looked at Min-su. "The entity used his compound tissue to buffer the divine-class material's frequency for the compound's partition. The connection that formed during the routing is permanent. He can hear the entity's signal continuously now."
Hwang looked at Min-su for three seconds. Not at the channels. At his face.
"He can still function," Sera said.
"I know he can." Hwang's voice was the voice she used when she was filing something away rather than responding to it. "Go over the fragment's data with Kang. I need a preliminary assessment before we make port." She paused at the doorway. "And get that arm looked at."
Sera looked at the dark section. The eleven centimeters of dead gold tissue.
"It's not a medical issue."
"No," Hwang said. "I know what it is." She left.
Sera looked at her arm for a long moment. Then she picked up Kang's frequency diagrams and started working.
The fragment was captured. The compound was stable. The firewall had held well enough.
She was missing eleven centimeters of gold tissue and her bodyguard was permanently connected to a geological intelligence older than human civilization.
These were the terms of acquiring the first divine-class ingredient. She'd known there would be terms.
She started working on what the outermost frequency layer could be brewed into.
