The first Void tear appeared on the fourteenth night.

  Sena found it. Of course she did.

  She had been sitting by the Void Observation Tower's base at an hour when no one else was outside — the tower's instruments had been quiet all day, their readings flat, nothing to suggest activity — when she heard it. Not with her ears. The sound that Void tears make is not audible in any conventional sense; it exists at a frequency below language, below the register of normal human sensation. But Sena had spent fifteen years hearing things that nobody else heard, and she knew the difference between the background noise of Void proximity and the specific resonance of a boundary beginning to fail.

  She walked toward it. She knew she should not walk toward it. She walked toward it anyway, because there was a juvenile Voidborn on the other side — she could hear it the way you can hear a frightened animal through a wall — and she needed to know if it was being pushed through or coming of its own will.

  The tear was in the training yard. Small — barely large enough to pass a hand through, ragged at the edges the way tears are when they form without structure. The air around it smelled like the space between stars: cold and empty and vast. Through it, she could see nothing except the dark of the Void, which was a different kind of dark than ordinary darkness, the kind that has weight and temperature and intention.

  She crouched beside it and listened.

  The juvenile Voidborn on the other side was frightened. She could tell this the way she could always tell — not through words, the Void had no words, but through the texture of its presence, the quality of its resonance against her own. It was not pushing at the tear. Something else was.

  Something is pushing from the other side.

  She straightened and ran.

  * * *

  Raka woke to someone shaking his shoulder with a grip that suggested urgency, and opened his eyes to find Sena standing over him with her expression set to a register he had not seen from her before: not quite fear, because Sena's relationship with things that frightened other people was complicated, but something that shared its urgency.

  'Training yard,' she said. 'Void tear. Something is pushing through.'

  He was out of bed before she finished the sentence. He knocked on Damar's curtain, said 'Void tear, training yard,' and heard immediate movement. Lenne was already awake — it later turned out she had not been asleep — and was pulling on her boots with the practiced speed of someone who had mentally rehearsed this scenario. Mira came out of her alcove with her notebook already in hand, which either meant she had known or that she slept with it, both of which were plausible.

  Tobas and Kai were both present when they reached the dormitory's common room. Kai had, as far as Raka could tell, simply been sitting in the dark.

  'We should tell an instructor,' Tobas said.

  'Yes,' Raka said. 'And we will. But the tower didn't detect it and Sena did, which means it's below the instruments' threshold, which means it might not be there by the time an instructor responds.' He looked at Sena. 'How long?'

  'I don't know,' she said. 'It's small now. It's being held small deliberately. Something is keeping it from expanding.'

  'Deliberately,' Damar repeated.

  'Something is choosing the size,' Sena said. 'It doesn't want to trigger the instruments.'

  The common room was quiet for a beat.

  'Training yard,' Raka said. 'Together. We observe, we don't engage, and we get an instructor the moment it starts to expand.'

  'And if it expands before we can get an instructor?' Lenne asked.

  'Then we deal with it,' Raka said. 'Carefully.'

  Damar was already at the door, map in hand. He had the route memorized.

  * * *

  The training yard at two in the morning was a different space than the training yard at noon. The practice dummies stood in their rows like a small frozen army. The targets hung motionless. The air was cold and still, and the tear was exactly where Sena had said it was, and it was larger.

  Not much larger. But larger.

  It looked like someone had taken a knife to the air itself — a cut approximately thirty centimeters long, the edges trembling, the darkness beyond it absolute in the way that the Void's darkness was always absolute. Cold radiated from it in pulses, and the smell was overwhelming up close: deep space, emptiness, something that was not rot but shared rot's quality of wrongness.

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  They stood in a loose arc around it, six meters back.

  'It's bigger than it was,' Sena said quietly. 'By about a third. In the time it took me to get you.'

  'That's a consistent rate of expansion,' Damar said. 'At that rate, it reaches instrument-detection threshold in approximately twelve minutes.'

  'So we have twelve minutes to get an instructor,' Tobas said.

  'Ten,' Damar said. 'To account for travel time and response.'

  The tear pulsed. The darkness beyond it shifted.

  Something pressed against the other side.

  It was not the juvenile Voidborn Sena had heard earlier. What pressed against the tear now was larger, and it pressed with intent — not the blind, frightened pushing of a small creature lost in the dark, but the deliberate, measured pressure of something that knew what the tear was and knew what was on the other side and very much wanted to come through it.

  Sena stepped forward.

  'Sena,' Raka said.

  'I need to hear it clearly,' she said. She crouched at four meters from the tear, closed her eyes, and listened.

  The rest of them held their positions. Lenne's hands were loose at her sides, ready. Damar had gone very still. Mira's eyes were slightly unfocused in the way they got when she was running through futures. Tobas was looking at the structure of the space around the tear — the load points, the stress lines — with his particular kind of attention.

  Kai was standing at a slight angle that Raka recognized now as his combat ready position, where the light bent around him just slightly wrong.

  Sena opened her eyes.

  'It's a Voidborn scout,' she said. 'Medium-class. It's been told to find the tear and hold it open from the inside.'

  'Told by what?' Raka asked.

  She looked at him with an expression that had moved somewhere serious.

  'Something that can give orders,' she said. 'Something with language. Something old.'

  The tear expanded by another few centimeters.

  'We close it,' Raka said.

  'We don't know how to close a Void tear,' Lenne said.

  'Tobas,' Raka said. 'Structure. What holds it open?'

  Tobas moved closer, studying the tear the way he studied everything, looking for the places where it was held and the places where it wasn't. He had gone pale but his voice was steady.

  'The edges,' he said. 'There are stress points at each end of the cut. If those break, the tear collapses. But the Voidborn on the other side is holding the central seam.'

  'So we need to break the endpoints and displace the Voidborn simultaneously,' Damar said.

  'At the same moment,' Tobas said. 'If we do one first, the other compensates.'

  Raka looked at the tear. Then at his hands. Then he reached — carefully, deliberately, a valve and not a door — for Lenne's kinetic signature.

  It came through in a thread. Controlled. Painful, but manageable.

  'Endpoints,' he said to Tobas. 'Mark them.'

  Tobas pointed. Two spots, one at each end of the cut, where the tear's structure concentrated its tension.

  'Sena,' Raka said. 'Tell it to move. Tell it the structure is collapsing. Whatever will make it pull back.'

  'I can't lie to it exactly,' Sena said. 'But I can tell it the truth in a way that achieves the same result.' She hesitated. 'It might listen. It's not loyal to what sent it. It's only frightened of it.'

  'Try,' Raka said.

  Sena spoke into the tear. The not-language, the frequency below hearing, the grammar of the Void. Whatever was on the other side shifted.

  'Now,' Tobas said.

  Raka released the kinetic thread at both endpoints simultaneously, two precise strikes, and felt the tear's structure shudder. The Voidborn on the other side, displaced by Sena's communication and the sudden structural failure of its grip points, withdrew. The tear collapsed inward with a sound like a snapped wire, a single sharp note, and then the air was simply air again and the training yard smelled like night and cold grass and nothing else.

  The silence lasted three seconds.

  'That,' Lenne said, 'was either very stupid or very impressive.'

  'Both,' Damar said. 'Simultaneously.'

  Raka was sitting on the ground. He did not remember sitting down. His hands were shaking and his elbow was a sustained bright line of pain and he was, all things considered, extremely glad to be alive.

  'Someone needs to report this,' Mira said. 'The tear. The scout. What Sena heard.'

  'We report the tear,' Raka said. 'We don't report what Sena heard. Not yet. Not until we understand it better.'

  'You want to hide information from the academy,' Damar said. Not accusatory. Just precise.

  'I want to understand it before we hand it over to people who might not use it the way we'd want them to,' Raka said. 'There's something old in the Void that can give orders. That's — that's bigger than a standard Voidborn incursion. I want to know more before that information is out of our hands.'

  Damar was quiet for a moment. Then he nodded.

  'We report the tear as a spontaneous low-level incursion,' he said. 'Detected by Sena, closed before it could expand. All of which is true.'

  'All of which is true,' Raka agreed.

  Mira had been watching this exchange with her slightly-ahead eyes. She said nothing, which Raka had come to understand meant she had already seen the next several seconds and found them acceptable.

  They filed back inside through the pre-dawn dark, leaving the training yard empty and ordinary behind them. In six hours the academy would wake up, and students would run drills in that yard, and nobody would know that the air six meters from the central practice dummy had spent twenty minutes being something other than air.

  Nobody except seven students who had closed a Void tear with borrowed kinetic force and the careful, precise communication of a girl who could speak to things from the other side of reality.

  Nobody who would have believed them if they'd told the whole truth anyway.

  * * *

  In the Void Realm, at a depth where the darkness was thick enough to have texture and the cold was cold enough to have weight, something that had been waiting for a very long time felt the collapse of its scout's connection.

  It was not surprised.

  It was, if anything, interested.

  The scout had been a test. Not of the academy's defenses — those were known, mapped, irrelevant to the larger plan. A test of something else. A test of whether the signatures it had been searching for were present, were active, were capable of responding.

  They were. All seven. In one location. Already working together.

  It had taken three centuries to arrange conditions this specific. The signatures had to appear simultaneously, in proximity, at the right moment in the seal's degradation cycle. Too early and the seal held regardless. Too late and the seal would fail on its own, which would be messier and less useful than what it had in mind.

  The timing was exactly right.

  It settled back into the dark with the patience of something that had already waited three hundred years and could, if necessary, wait a little longer.

  But not much longer.

  The seven were awake now. The seal was thinning. The gate would open.

  It was simply a question of how.