Chapter Text
L understood people.
Not in the way that most people meant when they said that, not warmly, not with the particular empathy that made someone good at comfort or conversation. He understood people the way he understood everything else, systematically. Precisely. From the outside in.
He understood that grief manifested in the body before the face, like the way the shoulders dropped first, the way the jaw set. He understood that anger ran hot and cold in specific patterns depending on the person. He understood that affection, romantic affection specifically, produced a consistent and observable set of behaviors: prolonged eye contact, proximity-seeking, changes in vocal register, the particular quality of attention that bent toward a single person like a plant toward light.
He had catalogued all of it, filed all of it. Used it, in cases, as reliable data. He understood love the way a cartographer understood a country he had never visited. Every road is mapped. Every elevation is marked. No memory of standing on the ground.
This had never bothered him.
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You and L had been children together, which was a strange thing to say about L, because he had never seemed like a child even when he was one.
But you had known him then. That was the simplest way to say it. The truest way. Before the cases and the code names and the particular weight of being who they were, there was just Wammy's House, and a window seat, and two children who had found each other's company preferable to others without ever discussing why.
The kind of thing built itself in the background of years without asking permission. You didn't know exactly when it shifted. One day, you simply knew. That you looked for him first in every room. That his voice was a different frequency than everyone else's. The specific way he said your name. But you kept it the way you kept most things, quietly, carefully.
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Years passed. Cases came. The world outside Wammy's House opened up. It consumed you both in different ways, your paths crossing and separating and crossing again in the particular rhythm of two people who were always, somehow, in each other's orbit.
-
The problem began approximately fourteen months ago.
L had always been able to read her. That was the natural order of things. He could read everyone, to varying degrees, and for her? He could read well. The small tells of her thinking. The specific quality of her silences. The way she held things, she wasn't ready to say.
Then something changed.
He couldn't locate the shift exactly. It had been a gradual interference. He would notice that she was watching him, and he couldn't identify what the look meant. She would do something ordinary, simply hand him a file, sit beside him, say his name, and his internal read would return: unknown.
Unknown.
L did not get unknown. Never.
He got uncertain, occasionally. He got insufficient data rarely. He did not get unknown. He ran diagnostics. Reviewed his observations. Cross-referenced against his existing models.
The behaviors were familiar, what he had catalogued in others. Proximity-seeking. A particular quality of attention. The way her eyes would find him first when she entered a room.
But when he ran them against the model for affection, romantic, the output was inconsistent. Because alongside these behaviors were others that contradicted the model entirely, she wasn't nervous around him. She didn't perform. She didn't adjust herself toward him the way that people in that category typically did, carefully, hopefully for return.
She was simply being herself, just around him more than anyone else.
And this didn't fit the model in his head. Either the model was wrong, or she was an outlier, or…
Or he was missing a variable.
L did not tolerate missing variables.