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The dungeon air of Hogwarts never changed.
It did not soften for grief. It did not warm for memory. It simply existed. Cold stone, colder silence, and the faint sting of potion fumes that clung to everything like regret.
Severus preferred it that way. Emotion, after all, was inefficient. Still there were moments when inefficiency found him anyway.
Draco stood at the edge of the classroom, wand hand steady, expression carefully arranged into indifference. A Slytherin prince in training, posture perfect, tone controlled, cruelty already learned.
But Severus was not watching his face. He was watching what Draco refused to see.
Across the room, Hermione Granger bent over a cauldron with absolute focus. Bushy brown curls escaped their tie as always, falling into her eyes while she muttered corrections under her breath. Ink stained her fingers. Her brow furrowed when the potion shimmered incorrectly.
And Draco watched her like a man studying a spell he did not yet have the courage to cast. Too long. Too often. Too quietly.
“Malfoy,” Severus said smoothly, without looking up from his own notes, “if you continue to stare at Miss Granger as though she has personally insulted your ancestry, you will eventually be expected to act on it.”
Draco startled. Then recovered instantly.
“I don’t know what you mean, Professor.”
Severus finally looked at him. A slow, measuring glance.
“Of course you don’t.”
That was the problem with children who thought themselves clever. They believed concealment meant invisibility. It did not. It merely meant observation became more precise.
Severus turned back to his potion.
“You will adjust your stance,” he said calmly. “And your expression. You are not looking at her correctly.”
Draco frowned slightly. “There’s a correct way?”
“There is always a correct way,” Severus replied.
Silence.
Then Draco, quieter, asked,” What am I doing wrong?”
Severus paused. For a fraction of a second, something old stirred in his chest. Something bitter and uninvited.
Lily. Bright hair. Bright voice. Bright everything. Severus had never been allowed to touch that without consequence. He pushed the memory down like pressing a blade into a locked drawer.
“You are letting your attention linger,” Severus said instead. “That is careless. It invites questions. Questions lead to exposure. Exposure leads to death— if you are fortunate.”
Draco’s jaw tightened.
“And if I’m not?”
“Then you will suffer first,” Severus said evenly. That, at least, seemed to satisfy him. Good. Fear was easier to train than longing.
Later that night, the corridors were empty.
Severus moved like a shadow through stone, robes whispering against the floor. Hogwarts at night was honest in a way it never was by day, less noise, less performance, more truth.
He stopped before a partially open classroom door.
Inside, Draco sat alone. A textbook lay open, but he wasn’t reading. His wand rested on the desk. His gaze was unfocused.
And his thoughts—
Severus did not need Legilimency to know where they drifted.
Hermione Granger again. Always her.
Severus watched him for a long moment.
Then entered.
Draco startled upright. “Professor—”
“Sit down,” Severus said.
Draco obeyed immediately. That, at least, he had always done well.
Severus closed the door behind him.
“You are compromised,” he said calmly.
Draco went still. “I am not.”
“You are,” Severus corrected. “You are simply not yet punished for it.”
A pause.
Draco’s voice lowered. “It is not a distraction.”
Severus’ eyes narrowed slightly.
“It is a liability.”
Silence settled between them like dust.
Then Severus stepped closer.
“You will learn to hide it,” he said.
Draco blinked. “Hide what?”
Severus’ gaze sharpened.
“The way you look at her.” That did it. A flicker. A crack. A betrayal of composure so brief it might have been imagined.
But Severus saw it. Always.
“You will not let it surface when he is near,” Severus continued. “When the Dark Lord is near. When anyone is near who might interpret it as weakness.”
Draco swallowed.
“And if I cannot?”
Severus’ voice dropped slightly.
“Then you will die,” he said simply. “Or worse, you will make her the reason you do.”
That landed. Draco’s hands tightened on the edge of the desk.
“I would never—”
“You already are,” Severus interrupted softly.
Silence. A heavier kind now. Severus studied him. So young. So careful. So doomed to feel things he had no language for.
Just like—
No. Severus cut that thought off before it could breathe.
Lily did not belong here. Not in this boy. Not in this room. Not in anything that still had a chance to be saved.
“You will practice Occlumency,” Severus said finally.
Draco frowned. “I already—”
“You do not,” Severus corrected. “You defend. That is not the same.”
He stepped closer. Lowered his voice.
“When you think of her,” he said, “you do not indulge it. You shut it away. You lock it behind something you would not willingly revisit under torture.”
Draco hesitated.
“What would that be?”
Severus paused. For the first time, something in his expression shifted, just slightly.
A memory. A green-eyed girl in a corridor. A laugh that should have been his undoing.
He spoke carefully. “Find something you would sacrifice her to preserve.”
Draco flinched. Good. That was the cost. That was always the cost.
⸻—————————————————————————
Years would pass like this. Control taught as survival. Emotion disguised as weakness. Love reframed as liability.
And Harry Potter— poor, oblivious Harry Potter— would walk through it all untouched by the truth. Severus kept it buried, letting him believe the world was simpler than it was. As Severus had once believed.
Before Lily. Before everything.
⸻—————————————————————————
One evening, after another war-stained day that had not yet become a war, Severus found Draco again.
This time not watching her. But looking away from her too quickly when she passed. Better. Progress always looked like absence.
“Improving,” Severus observed.
Draco did not look up. “I am not thinking about her.”
A lie. But a practiced one.
Severus inclined his head.
“Good.”
A pause.
Then, quieter than he intended, “Do not confuse survival with cruelty.”
Draco finally looked at him then. Confused.
Severus turned away before that confusion could turn into questions. Questions were dangerous. Questions led to truth. And truth, in his experience, rarely arrived gently.
That night, alone in his chambers, Severus stood before the dark mirror of his thoughts.
Lily’s face was not there. It never was. Only absence. Only memory that refused to fade even when everything else had been burned away.
“You are still here,” he said quietly into the empty room. No answer came. Of course not. And yet somewhere in the echo of Hogwarts, in a classroom lit by dying candles and teenage uncertainty, a Slytherin boy was learning to bury love like a curse. And a Gryffindor girl was unknowingly becoming the reason he survived it.
Severus exhaled slowly. “Pathetic,” he whispered to himself. Then, after a pause, not unkindly: “…consistent.”
Because for all his cynicism, for all his bitterness, for all the ruin he carried like a second spine, he recognized patterns when they formed.
And this one might survive where others had failed. A Slytherin prince, learning restraint. A Gryffindor girl, refusing to be less than she was.
And if the world did not destroy them first… then perhaps, just perhaps—Severus thought, with something dangerously close to hope he would never admit aloud—one of them might finally be allowed to keep what Lily and he had never been allowed to finish.