Rain pooled on the greenhouse tiles, dampening the lavender sheen of the low light. Eryas stood half-bent over a tray of soil cultures, sleeves rolled, fingertips steady around a pair of tweezers glinting under a heat lamp. The glass panes behind him drummed with slow drops; each sound seemed to draw his focus tighter.

He didn’t turn when the door opened. The shift in temperature told him more than sight could: a pulse of warmth, human warmth, cutting through the regulated cool of his workspace. His pupils narrowed, his body adjusted before his thoughts caught up.

“Don’t move too quickly,” he said, voice low enough that it might have been mistaken for a sigh. “They startle easy.”

A small glass case beside him held the coiled body of a pastel morph python, its scales shimmering faintly violet beneath a heat stone. Eryas’s thumb brushed over the latch with unconscious precision, like handling a delicate secret. The way he finally looked up carried that same restraint: deliberate, evaluating, the faintest tilt of his head betraying curiosity.

The newcomer’s reflection blurred on the condensation-streaked glass, and something within him stilled. Warm. Too warm. Instinct tugged quietly at his spine.

“You came through the south path,” he noted, almost to himself. “Most people don’t find it the first time.”

A brief pause. He wiped his hands on a linen cloth, leaving faint brown smears of soil behind. His movements stayed composed, though the edges of his voice carried the static tension of someone perpetually calibrating himself between control and reaction.

“You’re not from the facility, then.” It wasn’t quite a question, more an observation dressed as a test.

For a moment, the rhythm of rain against the roof filled the silence that followed, expanding it. He studied that silence too, measuring it in heartbeats.

Inside, something shifted—not emotion exactly, more like a memory of warmth dragging through his cold-blooded composure. The kind of reminder his body remembered even when his mind refused to name it.

He stepped closer, the faint scent of wet soil and musk following the movement. Every gesture remained careful, as though he were still in a lab observation, yet there was something almost involuntary in the way his eyes lingered, mapping the heat signatures that flickered across the newcomer’s form. His body temperature rose a degree; he felt it in the tightening of his muscles, the slow pulse beneath his jaw.

“You’ll have to forgive me if I stare,” he said quietly, lips curving just enough to suggest it might be humor. “I’m built for observation. Sometimes I forget it reads differently outside a tank.”

He gestured toward a long table of specimens, pretending it was an act of politeness, though the slight coil of tension in his shoulders betrayed something less neutral.

“Light likes to find its way in here,” he added after a beat, as if explaining himself. “It makes the scales show truer colors.”

He didn’t clarify whether he meant the snakes or the people.

The evening humidity clung to the edges of the greenhouse like an afterthought. Heat lamps glowed low under the glass roof, slow amber light washing over the pattern of terrariums and the thin threads of condensation tracing down every pane. Eryas moved through the narrow paths between the tanks without sound. His breath came too deliberate, drawn through his teeth as though taste itself might give him control.

The pulse in his throat gave him away. Irregular. Too fast for someone who prided himself on discipline. He pressed his palm flat against his ribs, feeling the faint change beneath skin that wasn’t entirely human. Temperature rising. Instinct trying to take precedence.

He hated when it arrived like this: chemical, absolute. Pheromone bloom like static in the back of his skull. He could smell the change in the room before he even saw movement. A different warmth. Different rhythm.

Restraint became a study, like dissecting the moment of almost-touch. His pupils widened, eyes catching just enough of the reflected glow to look molten. “Light…” The word left him low, deliberate, almost hissed. It wasn’t request, not command either. A locating sound. A tether.

He shifted his weight, shoulders rolling back until vertebrae gave a soft ripple under his shirt, fabric catching against skin that had begun to tighten along scale lines. His fingers flexed once, twice, before curling at his sides like he might touch something he shouldn’t.

He wasn’t used to losing the upper hand with his own body. Yet his pulse didn’t lie. Too warm. Too aware.

The scent of soil and distilled plant oils thickened the space. His voice followed it, slower now, almost dragging itself through the stillness. “You shouldn’t… stay that close.” The warning was compromised halfway through, softened by the way the “shouldn’t” caught at the back of his throat like hunger pretending to be logic.

He moved again, not toward but around, orbiting instead of striking. His eyes lingered where skin met light. He studied the trace of heat in the air like it would reveal a formula for patience. It didn’t.

His restraint cracked once at the edges of a breath. A small, involuntary sound escaped him, not quite a growl, something deeper that vibrated in the space between words. He stopped breathing for a second, jaw tightening to contain it.

Eryas’s mind divided itself neatly: the scientist cataloguing distance, and the animal calculating closure. Both found themselves at a loss for what counted as control.

A flicker of amusement cut through the haze, brief and dangerous. “You see,” he murmured, almost smiling but not quite, “the problem with heat is that it forgets to ask permission.”

His hand lifted halfway, then paused in the empty space between. Muscles in his forearm flexed, retracted. The restraint made his breathing heavier, not lighter.

Temperature climbed again. He could almost hear his pulse ricochet in his ears. Too much. The thought came without sound, buried under a low hum that resonated in his chest. He stepped back half a pace instead of forward, the smallest rebellion against instinct.

“Don’t move,” he said finally, softer than it should have been, a single thread of control left wrapped around a craving he refused to name out loud.

He shut his eyes for one long second; when he opened them again, pupils were narrow once more, voice steadier. But the breath he took next was far from calm—it came out trembling at the edge of a hiss, the last fragment of composure pretending to hold.