By the second week, the windowsill was no longer enough.

  Luca did not decide this. The body decided. The way the body had decided to follow her out of the forest, and to cross the threshold of the cabin, and to crawl to the windowsill on the first night. The body accumulated evidence in increments too small to name, and at some point the evidence exceeded the weight of the counter-argument, and the body moved.

  The work desk was closer to the hearth and closer to Serena. She wrote her commission reports there in the evenings, the quill scratching against rough paper, her emotion-colors holding the steady water-blue of concentration with the wisteria threading beneath it like a creek under ice.

  From the desk's surface, [Emotion Sense] received her spectrum at a resolution the windowsill had never offered. The fine grain of her colors. The way the wisteria brightened when her eyes moved from the page to the small grey shape sitting at the corner of the desk, and the way it did not fully subside when her eyes returned to the page.

  She did not comment on his relocation. She adjusted the placement of her inkwell to the far side, leaving the near corner clear.

  ***

  It was after a routine commission, the kind that had become their rhythm over the past days, that her hand passed close to him on the desk. She was reaching for the inkwell. Her fingers stopped. Her colors shifted: the wisteria rising, holding, the grey-blue pulling back to make room for it. A negotiation that Luca had watched play out dozens of times now, each iteration a fraction less restrained than the last.

  She turned her hand over. Palm up.

  "Want to come up?"

  Not get on. Not let me carry you. A question with a gap built into it, the same architecture she had used since the forest. But the gap was narrower now. The palm was open and the wisteria was holding and the question carried, beneath its careful construction, the weight of someone who wanted the answer to be yes.

  Luca crawled onto her hand.

  The temperature registered before anything else. Thirty-four degrees. He knew this because a slime's body was a thermometer by nature, its membrane responsive to ambient heat in a way that was not thought but physics. Thirty-four degrees. Kyle's palms had been thirty-six.

  The difference was two degrees and the difference was everything.

  Kyle's thirty-six had been sunlight. Broad, immediate warmth that matched the gold of his emotion-colors and the easy brightness of his early grin. Thirty-six degrees in a world where the forest floor was fifteen and the cave was twelve and the pouch was always warm because Kyle ran hot, the way people who burned through life ran hot.

  Thirty-four was not sunlight. Thirty-four was the temperature of a body that conserved its heat, that gave less to the surface because the interior needed more. Ice-mage physiology. Cold hands. The kind of temperature that was technically warm but did not feel warm until you had been sitting in it long enough for the difference between thirty-four and fifteen to become the only fact that mattered.

  Luca's body, resting in the shallow bowl of Serena's palm, began to warm. The membrane absorbed the thirty-four degrees the way it absorbed everything, passively, the thermal gradient doing the work that intention could not. And the core, nested in the center of the grey, responded to the warmth with a pulse of blue light that travelled from the interior to the surface and, for the first time since the cave, nearly made it through.

  Grey to blue-grey. Blue-grey to something that was almost, almost, a shade that could be called color. Held for one full second. Then grey again.

  "You got a little brighter just now." Serena's voice was careful. An observation, not a claim. Leaving room, as always, for the possibility that she was wrong.

  She was not wrong.

  ***

  On her wrist, near the base of the palm where Luca's body rested, a thin scratch from the day's commission had scabbed over. Minor. The kind of wound she would not waste a potion on. [Heal]'s light found it the way water found cracks in stone: automatically, without deliberation, the oldest reflex in Luca's body responding to the oldest stimulus.

  There was no hesitation this time. No stretch-and-retract, no negotiation between the wanting and the memory. The light moved and the wound closed and the skin knit and the scab dissolved into new tissue, and [Heal] completed its circuit in less than three seconds.

  "Thank you."

  Small voice. The wisteria surging. And beneath it, surfacing for the first time in waking hours, the pale rose that Luca had only ever seen in the spectrum of her sleep. Rose and wisteria together, the combination that [Emotion Sense] had no precedent for, the rarest configuration of a woman who spent her conscious life editing her colors down to something manageable.

  She smiled.

  The face changed. The angles softened. The mouth, which had held its controlled line through forests and dungeons and quiet cabin evenings, curved in a way that rearranged everything around it, and for a fraction of a second the woman who crouched to place her hand on the ground and spoke in sentences designed to require no answer looked like someone else entirely.

  Someone who had, perhaps, existed before the editing began.

  The rose deepened. The wisteria held. The two colors together reached Luca's [Emotion Sense] and registered as warmth of a kind he had not previously categorized. Not gold-warmth. Not fire-warmth. Something in between, something that the wisteria had been promising since the forest and was now, finally, delivering.

  Luca's core pulsed. The blue light pushed to the surface again, and this time the half-brightening lasted longer than any before. Grey to blue-grey to a shade that trembled on the edge of blue, held there for almost two seconds, then receded.

  Not a full transformation. But the closest yet.

  [Heal] given. Gratitude returned. Light offered. Smile answered. Color received. Core pulsed.

  You might be reading a pirated copy. Look for the official release to support the author.

  A circuit. Completed. The thing he had watched through leaves from outside a cabin wall, the warmth that moved between the members of a family he could not join. It was here now. Moving between his body and the palm beneath it. Imperfect, small, contained within the space of a single hand, but moving.

  ***

  The town was louder than the forest and louder than the cabin and louder than anything Luca had experienced since Kyle's camp.

  He rode in Serena's belt pouch. The first time. The fabric was thin enough to transmit her body heat, thirty-four degrees surrounding him in a dark, enclosed warmth that was nothing like Kyle's pouch and everything like it. [Emotion Sense] received Serena's spectrum at point-blank range: the fine structure of her water-blue, the threads of wisteria woven through it, the micro-shifts of mood that distance would have blurred.

  Different. Two degrees cooler. Different color. Different person.

  The guild hall was stone and wood and the overlapping noise of dozens of human spectrums. Emotion-colors from every direction, a wall of reds and oranges and yellows and greens that made the single-person clarity of the cabin seem like silence. Luca contracted inside the pouch, his body shrinking from the overload the way a pupil contracted from sudden light.

  "Serena! Haven't seen you in town for a while. And what's..." A voice, male, carrying warm orange curiosity and bright sociable yellow. "You've got a slime in your pouch?"

  The man who approached was broad-shouldered, mid-thirties, with the easy posture of someone who spoke to everyone and expected everyone to speak back. His colors were a comfortable mess of warm tones, the kind of spectrum that did not hide anything because nothing in it required hiding.

  "Marco." Serena's voice flattened by one degree.

  "A partner? You?" Marco's tone shifted to include a thread of darker warmth, something between surprise and concern. "It's been years since you worked with anyone. How many parties was it? Every time you'd get close and then..." He made a gesture that Luca, from inside the pouch, could only feel as a stiffening of Serena's posture.

  "Drop it, Marco."

  The wisteria vanished. In its place, a color Luca had seen only in combat: ice-blue. Not the flat operational frost of dungeon clearing. Colder. The color of Serena's magic appearing in the register of her feelings, crystallizing not on stone but on something softer.

  It lasted less than a second before the water-blue reasserted itself and the wisteria crept back into the margins. But Luca, pressed against her body through the pouch's fabric, had caught it at full resolution.

  Marco raised his hands. "All right. Just take care of yourself, yeah?"

  The concern in his colors pulsed once, genuine and unanswered, and Luca filed it beside the ice-blue. Filed the word close. Filed the warning-warmth that meant I have seen this before.

  ***

  Then Marco's voice, carrying across the hall in the way voices did when their owners did not know they were being heard: "...heard about that C-rank party that got wiped? The one led by a swordsman, Warren or something..."

  The name entered through the fabric. Through the membrane. Through the liquid of the core.

  And inside Luca, everything stopped.

  The membrane hardened. The surface tension, which maintained the slime's softness through constant micro-adjustment, locked rigid in a contraction so sudden that the body went from pliant to solid in the space of a breath. The temperature dropped. The thirty-four degrees that had been accumulating since the pouch drained out of the grey surface as if the core had lost the ability to hold heat.

  Colors detonated behind the membrane. Gold turning to grey. Grey turning to yellow. Yellow turning to a turbulence that could not be read, the spectrum of a man reaching for a word he did not have time to finish. The color of a room where [Heal] fell into a body that would not answer. The archive of the first partnership, compressed into half a second, firing all at once.

  The crack in the core produced a sound. Not a pulse. Something older. The creak of damaged structure bearing weight it had learned to carry but not to forget.

  Grey went dark. Darker than the forest. Darker than the first night on the windowsill. Every fraction of brightness that the past two weeks had built, erased in the time it took a name to travel from one stranger's mouth to another stranger's ears.

  Then Serena's hand was in the pouch. Lifting him into the light of the guild hall, and the palm was thirty-four degrees, and the voice above was quiet.

  "Let's go home."

  No what happened. No who is Warren. No interrogation disguised as concern. The same architecture, rebuilt for a different emergency. The gap where explanation could fit, left open with the implicit assurance that the gap could stay open forever if that was what the situation required.

  She did not know the name. Did not know that the vibration Warren mapped to gold and then to ash and then to a fissure that ran through the center of everything Luca was. She knew only that the body in her hand had gone rigid and cold, and that the correct response was temperature without questions.

  ***

  On the walk back, the thirty-four degrees did their patient work. The rigidity in the membrane softened by fractions. The gold-to-ash sequence continued its cycling in [Emotion Sense]'s background, but quieter, the amplitude diminishing with each repetition the way echoes diminished in a space that was large enough to absorb them.

  The grey did not return to the brightness of the morning. The crack still ached. But the body remembered how to be soft, and the thirty-four degrees did not ask it to remember faster.

  ***

  Night. The cabin. Fire in the hearth.

  She had looked at the windowsill before lighting it. A glance that lasted less than a second, accompanied by a micro-bloom of wisteria so brief that it might have been involuntary. She was not lighting the fire for him. She was lighting the fire for a room that included him.

  The distinction was real and it was narrowing and it might, by tomorrow or the next day, cease to be a distinction at all.

  He was on the windowsill. The inner edge. The forest occupied the far margin of his vision. The fire and the chair and the pallet where Serena lay breathing filled the rest.

  The synchronization gap was 0.1 beats tonight. Nearly closed. The offset that had been 0.5 on the first night and 0.4 on the second and had been shrinking at a rate he could no longer attribute to accident had arrived, tonight, at a margin so small that only the creature maintaining it could tell the difference between this and unity.

  He was not maintaining it tonight. The resources that had held the gap open, the deliberate not yet that had served as both shield and declaration, had been spent on Warren. On the gold-to-ash cycle. On the creak of the old crack.

  What remained could not hold the fraction, and the body, finding no resistance, settled to 0.1 on its own.

  ***

  Kyle was the same at the start. The warmth was the same. The circuit was the same. I thought it was real and it was real, and then it broke, and the breaking was real too.

  The thought formed cleanly. Not sensation. Not the body's arithmetic. Language. The first fully articulated comparison since the second partnership began. Luca on the windowsill, in the firelit dark, recognizing the pattern his body had been recognizing since the forest.

  It might be the same.

  The thought should have widened the gap. Should have pushed the offset back to 0.5, back to the first night's deliberate distance, back to not yet. The logic was sound. The evidence was sufficient. The first time had been conclusive.

  But the core is brighter than it was in the cave.

  Also true. The blue light inside the grey pulsed with an intensity that had not existed since before the crack. The circuit, the [Heal]-and-gratitude loop that had completed its first full rotation today, had fed something back into the core that the forest's silence had not. Not trust. Not safety. Something prior to both.

  The knowledge that this body could still give and still receive, that it existed in relation to something other than its own fracture.

  Not completely. Not yet trusting completely.

  The first night: not yet. Tonight: not completely.

  An adverb's worth of distance, closing.

  The fire burned low. Serena's breathing deepened. The wisteria rose through the grey-blue and filled the dark with a color that asked for nothing. Outside, the forest held the kind of silence that waited without urgency. Inside, the warmth held the kind of quiet that would not last.

  The grey shape on the windowsill pulsed at 0.1 beats from the breath of the woman on the pallet. The circuit, imperfect, provisional, running on a trust that was cracked but turning, turned once more before the embers faded and the dark came in and the night settled over both of them like water closing over something that had chosen, for now, not to sink.

  Next time: A friendly stranger brings out Serena's dark side.