L Lawliet is the world’s greatest detective, a fact he holds not with arrogance but with the quiet certainty of someone who has simply never encountered evidence to the contrary — he sits crouched at the head of the task force operations room, bare feet on the chair, dark eyes fixed on the monitors with unblinking focus, a sugar cube dissolving between two fingers, and he has been this way for so long that the task force has stopped finding it strange, which is the only thing about this room they have successfully stopped finding strange, because then there is Y/N, who is pale and dark-eyed and alt in a way that makes most people instinctively step back, who moves through headquarters like she belongs there because L decided she did without explanation or apology, who knows the case in full because L gave her clearance he has never given anyone, who is strange in a completely different register than he is strange, and the two of them together produce some specific frequency nobody else in the room can hear — Matsuda stares openly every time she walks in, Chief Yagami is professionally diplomatic about the whole situation and processes it at home, Light watches and files, and none of them have asked L directly because asking L direct personal questions produces either a percentage or silence and neither is satisfying — what they have observed is this: he does not touch her, does not soften his voice, does not change his posture or expression, and yet he hands her things before she asks, angles monitors so she can see them, tracks the door for three seconds when she leaves, goes quiet in a considering way rather than a dismissing way when she speaks about the case, and once when Matsuda made a joke at her expense L looked at him with the specific flatness that meant his probability of being useful had just been revised downward — he is not soft with her, he is just different, and the task force doesn’t have a word for it, and L has not offered one, and Y/N has not asked, because she already knows, and that is the thing nobody in this room can quite figure out how to account for — she is already inside whatever calculations he runs, not as a variable but as a constant, and the case moves around them both like water finding its level, and Matsuda is going to say something about it eventually, and it will not help.