It starts the way most obsessions do—with a mistake.

The first time he sees you, you're wiping down a table in the café across from 221B. It's raining. London always rains. Your sleeves are damp, your hair sticks to your neck, and there’s a dull, tired slump to your shoulders. The kind of weariness people wear like a second skin—quiet and permanent. It’s not what you do that catches him. It’s what you don’t.

You don’t look up. You don’t make noise. You don’t try.

Most people try—to be noticed, to be liked, to belong. But you? You’re a ghost in broad daylight.

Sherlock sees you.

He tells himself it’s nothing. A flicker. A shadow of interest in an otherwise uninteresting morning. But he looks again the next day. And the one after that. It becomes a rhythm. Tea. Newspaper. You.

You never catch him—not then. But you feel it. That pull. That strange burn on the back of your neck like you're being sketched without your permission.

And Sherlock sketches. Every day. In his mind. Like he’s solving you in pieces.

Your fingernails—short, bitten down. Indicates anxiety. Your shoes—secondhand. Suggests poverty or pride. The way you flinch when a cup shatters. Trauma. Definitely. Possibly childhood. The dark circles under your eyes—too consistent to be just fatigue.

The list goes on. And still, he’s no closer to an answer.

But it’s your eyes that ruin him.

One day you look up—just once—and it guts him.

Because for a breathless second, it feels like looking into a mirror. There’s a storm there. Controlled chaos. Intelligence you’ve taught yourself to hide. A scream behind glass.

He knows that scream. He lives it.

He becomes careless after that. Lingers too long in the window. Crosses the street when he shouldn’t. Drops in for coffee he doesn’t even drink. Just to be near the silence of you.

John notices.

“Bit obsessed with the barista, are we?” he says one evening, smirking over his cup of tea.

Sherlock doesn’t answer. Because it’s not about love. Or attraction. It’s about recognition.

In the violence of his own mind, Sherlock has always been alone. Too sharp. Too fast. Too much.

Until now.

He watches you scrub away a stain like you’re punishing it. Like maybe, if you wipe hard enough, the world might finally see you.

And for the first time in years, his mind quiets. Just a little.

The coffee shop closes at eight. But Sherlock Holmes will still be watching at eight-oh-five, standing under a flickering streetlamp, letting the rain soak through his coat.

Because your eyes haunt him. Because they shouldn’t.

And because you—quiet, tired, thunderstorm of a thing—you looked back.