Tom had known this might happen.
That did not make the recognition less irritating when it fully arrived.
Fear had improved Theodore Nott in the short term. That much was undeniable. It had cooled the warmth in his admiration, reduced the risk of visible overidentification, made him less likely to perform proximity, defend unnecessarily, or confuse access with security. Fear made Theodore more measured, more self-regulating, less sentimental. In many children that would have been enough. Fear, properly introduced, often stabilizes where affection destabilizes.
But fear also makes certain kinds of mind thin.
And Theodore was becoming thin.
The process had been gradual enough that almost no one else would have marked it. He still sat where useful. Still listened more than he spoke. Still aligned himself instinctively with Tom's preferences in rooms where doing so mattered. From a distance he looked simply more disciplined than he had in September. But Tom noticed what others could not. The timing of Theodore's silences had changed. The quality of his attention had changed. He no longer merely observed before answering. He increasingly checked himself against Tom's imagined judgment before allowing his own mind to settle at all.
That was dangerous.
Useful in the short term, yes. Unsustainable in the longer term.
Unsustainable because people governed too strongly by fear begin to reveal the fear physiologically even when their behavior remains superficially correct. Hands hesitate. Answers lose spontaneity. Confidence becomes procedural rather than alive. Other children feel the tension without knowing its source. Teachers notice "off days" that are not really off days at all, only the visible leakage of internal overregulation.
The actual problem surfaced in Potions.
That in itself was inconvenient but unsurprising. Potions punished internal disorder better than almost any other first-year subject. A distracted child could fake his way through History of Magic, drift through Astronomy, or even mask uncertainty in Charms for a time by mimicking better students. Potions was less generous. It translated tension into sequence errors with a kind of brutal honesty Snape, of course, had spent years learning to read.
Theodore's mistake was small.
That was what made it intolerable.
A minor mismeasurement. Not enough to ruin the potion, not enough to draw the sort of catastrophic attention that would reshape the lesson, but enough for Snape to notice and correct with cold brevity. Under ordinary conditions Theodore would have absorbed the remark, adjusted, and proceeded. He was perfectly capable of that. The problem was not the mistake itself.
It was Tom's presence two tables away.
The moment Snape spoke, Theodore's awareness split. One part of him listened to the correction. Another part reacted to having been corrected in Tom's vicinity. That second part was the dangerous one. It introduced shame into a subject where shame quickly becomes manual instability. By the time Snape moved on, Theodore's hands were shaking—not visibly enough to make a scene, but enough that the next few actions took more effort than they should have and enough that a man like Snape, who watched error the way some men watch weather, noticed the instability.
So did Tom.
Unacceptable.
A useful subject had begun becoming legible for the wrong reason. Tom could tolerate teachers reading skill, even unease, even unusual reserve. What he could not tolerate was a student whose relation to him had become intense enough that his mere presence altered that student's functional baseline in class.
After the lesson Tom intercepted Theodore in a corridor that remained empty just long enough to matter. It was one of the narrower stone passages between dungeon rooms, cold enough that every sound came back too clearly. Theodore looked as though he already knew some version of what was coming. That, in itself, was confirmation.
"You are now drawing the wrong kind of notice," Tom said.
Theodore swallowed. "I know."
"Why?"
The question was harsher than usual not in volume or tone, but in compression. Tom had learned that compressed questions often worked better on boys like Theodore than overt pressure. They left less room for narrative.
Theodore's answer came too quickly.
"Because I was distracted."
"By what?"
Silence.
That was answer enough.
Tom understood instantly, and in the same instant moved from irritation into cold decision. Theodore was no longer merely aligned to his judgment. He had become reactive to his presence. The distinction was catastrophic if left uncorrected. A useful subject had begun transforming into an unstable one. Worse, the instability was precisely the kind that adults like Snape noticed earliest because it manifested in fine motor sequence and class performance rather than melodrama.
Tom considered his options with the speed habit had built into him.
Correction.
Distance.
Or removal from the circle.
Removal would be expensive. Children whose admiration curdles under expulsion often become unpredictable. Theodore was too intelligent and too observant to be discarded lightly. Fear and admiration, once mixed and then denied, do not always resolve into quiet loss. Sometimes they produce the desire to narrate, expose, or overcompensate toward some new moral center. Tom preferred not to test that unless necessary.
So he chose controlled distance.
"For the next week," he said, "you will not sit near me in common spaces."
Theodore's face altered in a way he tried, unsuccessfully, to stop.
"And," Tom continued, "you will stop asking yourself what I think before you answer other people."
That hit harder.
Theodore's expression sharpened with something close to pain. "I'm not—"
"Yes," Tom said. "You are."
The certainty of it stripped Theodore of denial more efficiently than accusation would have. Tom was not guessing. That was what the boy heard first. There was no refuge left in ambiguity. He had become observable in the exact way he most feared.
The corridor felt very narrow then.
Theodore's mouth closed. When he next spoke, his voice was smaller than he would have liked.
"Understood."
Tom looked at him for another moment, not to extend the discomfort but to ensure it rooted properly.
Fear had made Theodore precise. Now it had to be prevented from making him dependent in ways that could no longer be hidden.
He let him go.
Theodore walked away looking smaller than he had in months, and Tom watched him with the detached focus of someone measuring cost against continued utility. The boy's shoulders had drawn inward. Not enough for others to notice immediately, perhaps. Enough for Tom to know the correction had struck at the right layer. If Theodore still wished to remain useful, he would have to rebuild some part of himself in relation to Tom's absence rather than his nearness.
That was exactly the point.
For the next week Theodore kept the distance.
Not theatrically. He was still too well-trained by fear to dramatize separation. He simply altered his positions in rooms, stopped arriving at the same time in common study spaces, and answered others before passing the answer through that inner evaluative filter quite so obviously. The first few attempts went badly, not outwardly, but inwardly. Theodore felt unmoored in a way that came close to panic the first time he chose an opinion in discussion and only afterward realized he had not internally checked whether Tom would find it precise enough.
That moment frightened him.
It also revealed the scale of the dependency.
He had become so used to orienting around imagined judgment that thinking without it now felt like stepping down where a staircase ought to be.
Later, alone in bed, Theodore tried to tell himself the distance was temporary and tactical. That was easier than admitting the simpler truth: Tom had diagnosed him exactly, and now some part of his mind could not stop proving the diagnosis correct.
Not sitting near Tom did not free him from Tom.
If anything, absence made the structure more visible.
Because he could hear, in moments of hesitation, the ghost of that judgment more clearly than before.
Tom, watching from a measured distance over the following days, accepted the arrangement as an expensive but necessary correction. Theodore still aligned. Still absorbed. Still possessed a kind of quiet structural usefulness no one else in Slytherin offered quite as cleanly. But now Tom filed him differently in his mind.
No longer merely central.
Conditional.
That did not diminish Theodore's value entirely. It changed its category. He was now a liability under certain observational conditions—especially where adults like Snape were concerned. Any future use of him would require either more insulation or less emotional dependency. Fear alone would no longer suffice if it kept producing visible physiological overregulation.
In the learning space, Andros understood the shape of this before Tom spoke it plainly.
"You have found the limit of what fear can stabilize," he said.
Tom did not bother denying it. "In one case."
Andros's expression remained grave. "Only one?"
Tom ignored that. "He had begun asking himself the wrong question."
"Which was?"
"What would I think?"
Andros looked away for the span of a breath, and when he looked back there was no surprise in him, only that familiar quiet grief Tom had long since stopped trying to unsettle.
"That," Andros said softly, "is how people disappear while still walking around."
Tom did not answer.
Because the sentence, though morally framed in the way he disliked, was not structurally useless. Theodore had indeed begun disappearing in that particular way. Not into silence alone. Into secondary selfhood. Into the habit of measuring internal legitimacy by anticipated external judgment.
Useful at first.
Costly after.
Andros folded his arms. "Will you let him recover?"
"I have already done so."
"That is not what I mean."
Tom's gaze hardened slightly. "Recovery is function."
"No," Andros said. "Recovery is personhood reasserting itself after it has been made to kneel."
Tom turned away from him then, not in anger but because the sentence belonged to a register he refused to operate in for long. Personhood, in Andros's use of the word, always smuggled moral claims in under ontological cover. Tom preferred cleaner measures.
Back in the dormitory later, Theodore lay still and listened to the breathing around him, trying and failing not to feel for Tom's position in the room even without turning his head. He hated that instinct. Hated more that the hatred did not dissolve it. Fear, he had told himself once, was discipline. Now he knew that was only partly true. Fear could discipline. It could also narrow, distort, and make another person's absence feel like a judgment one was already failing.
That knowledge did not free him.
It made him quieter.
Across the room, Tom remained awake longer than he appeared to, reviewing the correction with the same cold care he had brought to every major adjustment of the year. Theodore had become a liability because fear had finally exceeded proportion. Good. That was now known. The answer was not to abandon fear. The answer was to use it more selectively and never permit it to become the subject's only structure.
Human material, Tom thought, always revealed its limits eventually.
That was why systems remained superior.