The first two weeks of simultaneous release training were, in Sera's carefully chosen words, instructive.
In Nix's words they were a disaster.
The concept made sense on paper. Instead of absorbing a discharge, holding it, and then releasing it as two separate steps, he would absorb and release in one continuous motion, the energy flowing through him rather than pooling inside him. Like water through a pipe rather than water filling a tank. If he could get it right the ceiling became almost irrelevant because nothing would be accumulating long enough to build toward it.
The problem was that his body had spent four months learning to hold. Hold was the foundation of everything Sera had built the training on. Intake, hold, controlled release. The sequence was so ingrained at this point that trying to collapse the middle step felt like trying to unlearn how to walk by thinking about it too hard. Every time he attempted the flow the hold instinct kicked in automatically and the energy pooled the same way it always had and the moment passed.
By the end of the first week he had managed something close to simultaneous release exactly once, for approximately half a second, and had immediately lost control of the direction and scorched a two meter line across the floor that Osk had looked at with mild interest before going back to whatever he was doing.
By the end of the second week he was managing it maybe one attempt in twenty, inconsistently, with no reliable sense of what he was doing differently when it worked versus when it didn't.
Sera was patient about it in the way she was patient about most things, which was to say she didn't say anything discouraging, just marked the data and adjusted the approach and came in the next morning with a different angle to try. But he could see her thinking, the quiet working-through-it expression she got when the variables weren't resolving the way she wanted.
Fen was less patient in the sense that he had seventeen theories about why it wasn't working and wanted to discuss all of them, which was actually useful even when it was exhausting.
"I think the issue is framing," Fen said on the fifteenth day, sitting on the bench at the side of the training room while Nix stood in the center not doing the thing he was supposed to be doing. "You're trying to do two things at once. Absorb and release simultaneously. But maybe that's not what it actually is."
"What is it then," Nix said.
"What if it's not absorbing at all," Fen said. "What if it's just redirecting. The energy comes in, never fully enters you, just changes direction and comes back out. You're not a tank at all, you're more like." He thought about it. "A mirror. Or a prism."
Nix stood with that.
"You've been trying to catch it and let it go at the same time," Fen said. "What if you stop trying to catch it."
Sera looked up from her datapad.
"If I don't catch it I can't direct it," Nix said.
"Maybe not yet," Fen said. "But right now you're trying to do the advanced version of something before you've established whether the basic version works. Can you just let it pass through without directing it at all. Not holding, not releasing with intent, just. Open."
Nix looked at him. Then at Sera.
She had the expression of someone who hadn't thought of it that way and wasn't sure yet if that was because it was wrong or because it was right.
"Try it," she said.
She raised the emitter. Rank two discharge, the level they'd been using for the simultaneous work because it was enough to feel clearly without overwhelming him.
Nix tried to do what Fen had described. Tried to just be open. Not catching, not holding, not directing. Just a space that the energy could enter and exit without stopping. It went against four months of training the way running toward something you'd been trained to dodge went against instinct. Every part of his developed reflex said hold it, control it, know where it is.
He tried to let go of that.
The discharge hit him.
Something happened that was different from everything before. The energy came in and instead of the familiar pooling in his chest it moved, fast, through him and out through his back and dissipated into the air behind him without heat, without direction, without any of the controlled force of a proper release. Useless in combat terms. Completely unimpressive. He hadn't done anything with it.
But it had passed through.
He stood there for a second.
"Did that," he started.
"Yes," Sera said. She was looking at her datapad with an expression he'd never seen from her before. "Your accumulation reading didn't move. It came in and went straight back out." She looked up. "The reading on the exit side is degraded. Most of the energy dissipated rather than transferred. But it passed through."
"So the pipe works," Fen said, with the quiet satisfaction of someone whose theory had just survived its first test. "You just need to learn how to shape it."
Nix thought about what it had felt like. The openness, the not-holding. It was almost the opposite of everything he'd been doing for four months and it had felt uncomfortably close to doing nothing at all, which was maybe why it had worked.
"Again," he said.
Sera fired again. He stayed open. It passed through again, degraded, directionless, but through.
"Again."
Again. Through.
"Faster," he said.
She raised an eyebrow but increased the frequency. One discharge every three seconds. He stood in the center of the room and stayed open and let them pass through him one after another, each one entering and exiting without pooling, the accumulation reading on Sera's datapad staying flat. He could feel each one, a brief presence moving through the space inside him that he'd spent four months mapping, there and then gone, like wind through an open window.
After two minutes Sera lowered the emitter.
"Accumulation is at zero," she said. "Everything passed through. Exit dissipation rate is high, still not usable as a directed force." She looked at him steadily. "But Nix. At rank two discharge rate, continuous for two minutes, you would normally be sitting at around forty percent of your capacity ceiling right now."
He hadn't thought about the ceiling once in the last two minutes. There had been nothing to think about. The tank had never filled.
"How do I shape the exit," he said.
"The same way you learned to direct a release," she said. "Except now you're doing it in real time with energy that's already moving instead of energy that's sitting still." She paused. "It's harder."
"Okay."
"Considerably harder."
"Okay," he said again.
She almost smiled. He'd learned to catch those too, the ones that didn't quite make it all the way to her face. This one got closer than most.
"Take ten minutes," she said. "Then we'll start working on shaping."
He took the ten minutes. Drank water, sat on the bench, let his mind settle. Osk came in halfway through and Sera told him what had happened in about four sentences and Osk looked at Nix with something warmer than his usual mild curiosity.
"Good," Osk said. The same word he'd used on the first day, except different now. Weighted differently.
"I haven't done anything useful with it yet," Nix said.
"You found the thing that doesn't work and found something that might," Osk said. "That's most of the job." He went to the far end of the room and started his own training and said nothing else.
The ten minutes ended and Nix went back to the center of the room.
The shaping work was exactly as hard as Sera had said it would be. The openness that allowed the flow was fragile, it collapsed the moment he tried to impose direction on the exiting energy, the hold reflex kicking back in the instant he reached for control. He spent the rest of the morning finding the edge between open and directed, the precise narrow place where he could influence the exit without triggering the hold, and kept falling off it in one direction or the other.
But the edge existed. He could feel it. And every time he fell off it he got back on a little faster than the time before.
By the end of the session he had managed three directed passes. Energy entering, moving through, exiting in a controlled direction without accumulating. Each one lasted less than a second and the directed force was weak, maybe rank one output at most, a fraction of what a proper held release could produce. But directed. Controlled. Real.
Sera marked it on her datapad.
"How do you feel," she said.
"Like I've been trying to do two things at once for two weeks and just realized they're the same thing," he said.
She looked at him. "That's actually a good description of what happened."
He nodded and picked up his water.
"Nix," she said.
He looked up.
She seemed to be deciding something. The deliberating expression, the one she got when something hadn't resolved and she was deciding whether to say it out loud anyway.
"This changes the calculus," she said. "If you can develop this to a functional level. If the flow becomes reliable and the shaping becomes precise." She paused. "The ceiling problem doesn't disappear but it becomes significantly more manageable. And the potential output." She stopped.
"Say it," he said.
"A held release uses stored energy. There's a ceiling on how much you can store." She looked at him carefully. "A flow release uses energy in transit. The ceiling on that is different. It's not about how much you can hold. It's about how fast things can move through you." She paused again. "We don't have a measurement for that yet."
He sat with what she was saying.
"You're saying I might be able to handle more than we thought," he said.
"I'm saying the framework we've been using to think about your limits might not be the right framework," she said. "Which is different from knowing what the right framework is." She looked at him with that careful precise expression, the one that wasn't quite worry. "I'm also saying that unknown limits cut both ways. More capacity could also mean more risk if something goes wrong."
"I know," he said.
"I know you know," she said. "I'm saying it anyway."
He nodded.
Outside the training room the ship hummed along its invisible route. Seven dimmed lights on a map somewhere in his head. The number still too large to feel real, still getting larger.
He got up.
"Tomorrow," he said.
"Tomorrow," she agreed.
He was almost at the door when she spoke again, quietly, not quite the professional voice and not quite something else.
"You did good work today," she said.
He stopped. In four months it was the first time she'd said it that directly.
"Thanks," he said, just as quietly.
He went back to his quarters and lay on his cot and stared at the viewport. Stars doing nothing. The long dark between things.
For the first time in a long time the dark felt like something other than empty.
He wasn't sure what to call it yet.
But it was there.