Word about the letter Kael had traced on the practice floor took exactly four days to turn from a rumor into a formal request, and the request arrived, predictably, in the form of a folded note slipped under Wren's door with the Spire's official seal pressed into the wax.
Instructor Vosh requests your presence, and that of your tame, at the seventh bell. Lower Archive, Sublevel Two.
"That's not a normal classroom," Wren said, turning the note over like a second reading might change what it said.
"No," Kael agreed, from his usual spot on the windowsill. "It isn't."
"You knew this was coming."
"I suspected." Kael's horns tilted, unbothered, though something in his stillness afterward felt less certain than usual. "Instructors who run academies built atop old ruins tend to notice when old things start waking up inside them."
Wren sat down heavily on the edge of his bed, the note still in his hand. "Should I be worried?"
"You should be prepared," Kael said. "There is a difference, though I understand the two feel identical from where you're sitting."
He almost went alone. He almost told Iris nothing, on the theory that whatever was waiting in Sublevel Two was his problem and no one else's, but she found him in the corridor outside his dormitory before he'd made it three steps, notebook already in hand, expression already set in the particular stubborn line he was learning meant she'd made a decision and intended to see it through regardless of his opinion on the matter.
"I heard about the summons," she said, before he could ask how. "I'm coming."
"Iris—"
"You said it yourself. This isn't just your business anymore." She fell into step beside him without waiting for permission, the way she seemed to do most things. "Besides. If Vosh knows something about the ruins, I want to be in the room when she says it."
He didn't have the energy to argue, and if he was honest with himself, he didn't entirely want to.
***
The Lower Archive smelled like every old building Wren had ever been in, dust and parchment and something underneath both that he couldn't quite name, mineral and cold, like standing near a very deep well. Sublevel Two required a key Instructor Vosh produced from beneath her robes without ceremony, unlocking a door that looked, on first glance, entirely ordinary, and which Wren understood immediately, once it swung open, was anything but.
The stairwell beyond descended further than the building above it seemed to justify, torchlight giving way gradually to a soft, ambient blue-green glow that seemed to emanate from the walls themselves the deeper they went, the same faint oceanic color as Kael's eyes.
"The ceremony hall wasn't built where it was by accident," Vosh said, leading them down, her usual booming outdoor voice reduced to something quieter, more careful, better suited to the space. "Aurun Spire was constructed directly above this because whoever built it originally recognized what was here and wanted it watched. Whether they wanted it protected or contained, the records don't agree."
The stairwell opened into a wide chamber, circular, its walls lined with carved reliefs too worn and strange to fully interpret, spirals and long sinuous shapes that might have been beasts or might have been something else entirely, curling around a central floor inlaid with the same silver channel pattern as the ceremony circle above, dark now, unlit.
"This is where the pull originates," Vosh said. "Every summoning circle in Virelle draws from somewhere. Most draw from the wilds, from active bond-lineages, ordinary channels the registry has mapped for three centuries. Yours didn't."
Iris, beside him, had gone very still, notebook forgotten in her hand.
"You're saying Kael came from down here," Wren said slowly. "From this room."
"I'm saying this room has been dormant for as long as anyone alive has records of it, and four days ago, for the first time in that entire span, it briefly wasn't." Vosh turned to face him fully, her expression unreadable in the low blue light. "I've spent nineteen years administering this academy without once seeing these channels so much as flicker. I would like to understand why they didn't stay dark the day you stood in that ceremony circle."
Silence stretched through the chamber, broken only by the faint, distant sound of dripping water somewhere beyond the torchlight's reach.
"I don't know," Wren admitted. "I didn't do anything. I just put my hands on the stone like everyone else."
"I believe you." Vosh's gaze shifted, deliberately, to the satchel at his side. "Which is why I'd rather hear it from him."
Kael was quiet for a long moment, longer than Wren had ever heard him take before answering anything, and when he finally spoke, his voice carried a weight Wren hadn't heard from him before, something old and careful, picking each word like it cost him something to spend it.
"This room is not where I came from," Kael said. "It is where I was left. There is a difference, though I imagine that distinction means little to you without further context I am not yet prepared to give."
"Left by whom?" Vosh asked.
"I don't know. I was asleep for most of it, and I have chosen, so far, not to remember the parts I was awake for." A pause, horns tilting toward the dark, unlit channels in the floor, something almost mournful in the gesture. "I will tell you this much, because I think you have earned at least this much for the care you've clearly taken with this room. I am not the only one. There were others left in places like this one, scattered, sleeping, waiting for whatever conditions would eventually wake them. I do not know how many survived to be found. I do not know how many have already woken without anyone noticing what they were."
Iris's pen was moving now, fast, barely keeping pace with her own hand.
"That's not comforting," Wren said quietly.
"It wasn't meant to be." Kael's horns swayed toward him, something gentler underneath the words than Wren had heard from him before. "You asked me once why I chose you. I told you I did not choose, that I simply woke and you were the nearest hand. That was true. But I have had four days now to consider it further, and I find I no longer think it was only chance." A pause. "Whatever left me here left me somewhere a boy who does not know how to quit would eventually find me. I do not think that was an accident, even if I cannot yet tell you why."
Vosh studied them both for a long, measuring moment, the blue light catching the deep lines of a face that had clearly spent nineteen years learning not to show its full reaction to anything.
"I want your word," she said finally, to Wren, "that whatever this becomes, you bring it to me before it becomes something Aurun Spire can't contain quietly. There are people beyond these walls who would treat what just happened in this room very differently than I intend to."
"The Choir," Iris said, so quietly Wren almost missed it.
Vosh's expression didn't change, which was, somehow, worse than if it had. "You've been thorough in your reading, Miss Marrow."
"I've been careful."
"Be more careful." Vosh turned back toward the stairwell, torchlight sliding across her face as she moved, the conversation apparently closing whether they were ready for it to or not. "This room stays between the three of you and myself. I would prefer to keep it that way for as long as circumstances allow, though I am realistic about how long that's likely to be."
They climbed back up in silence, the blue-green glow fading behind them with every step, and by the time they emerged into the ordinary evening light of the upper archive, Wren felt like he'd left something down there he wasn't going to get back, some small, comfortable version of the last five days where Kael had only ever been an embarrassment and a joke and nothing else underneath.
"There are others," he said, once Vosh had gone and it was only the three of them again. "Other tames like you."
"Perhaps," Kael said. "Perhaps not. I told you the truth. I don't know."
"But someone's looking for them either way. The Choir."
Kael's horns went very still, and for the first time since Wren had known him, he didn't offer an answer at all.