I don't remember when I first decided that Lily was mine. I think that's the honest answer. I don't remember a moment of decision, the way I remember deciding to go to MIT, or deciding to specialize in neural mapping, or deciding that I would never, ever let anyone see the part of my mind that was not working right.

Lily was a mystery I wanted to solve. That's what I told myself, and it was close enough to the truth that it served. She was the kind of woman who existed outside the neat categories I was used to working with. She was not a patient. She was not a colleague. She was not anyone I had been trained to notice.

She was sitting in a café in Cambridge, drawing on a napkin with a pen that was clearly not hers—probably borrowed from the person at the next table—and she was drawing something that looked like a bird but was also something else, something that made me stop mid-step and stare, the way you stare at a scientific discovery you weren't expecting.

"Is that a bird?" I asked, which was a terrible thing to say to a stranger, but I was a scientist and scientists say terrible things because we are trained to ask questions and not to consider whether questions are always the right thing to ask.

"It's a butterfly," she said, and then she looked at me properly, and her eyes were the colour of tea, and she had a small scar on her chin that made her look like someone who had fallen and gotten back up and didn't mind the scar.

"Both," I said. "It's both. A bird-butterfly. That's... actually quite interesting."

She smiled, and the smile was not calculated or deliberate or the sort of smile that a woman gives a man she's trying to impress. It was just a smile—a real, unguarded, messy human smile that contained no agenda and therefore, in my experience, contained more truth than anything I had encountered in years of laboratory work.

I was twenty-eight. I had never been in love. I had been in something that was close to love, or close enough that I had mistaken it for the thing itself. But that was before Sarah, before the accident, before I had done the one thing I have never spoken about out loud, even to the people I trusted most at MIT.

I had erased part of my own mind.

I told myself it was an accident. A side effect of the experimental procedure I had been running on myself—the one I was never supposed to run on myself, the one that was supposed to be tested on volunteers, on patients, on other people's brains and not mine. But I did it. I pressed the button. I sat in the chair. I let the machine do what it was designed to do: it found the memories I told it to find, and it removed them.

The official explanation was that it was a research procedure. A pilot study. Self-experimentation in the service of science.

The truth was simpler and more shameful: I was in love with a man I could not have, and I could not bear the weight of that love, so I removed it. Or tried to. I thought I had removed it all.

I was wrong.

--- **TENSOR ENCODING (OTMES v2):** - Code: OTMES-v2-A8C93E-MM2-A225.0 - M Vector: [6.0, 2.0, 7.0, 4.0, 6.0, 7.0, 5.0, 0.0, 3.0, 5.0] - N Vector: [0.50, 0.50] - K Vector: [0.50, 0.50] - Dominant Mode: MM2 - Direction Angle: 225.0 degrees - Tragedy Rank: T1 绝望级 - E_total (Frobenius Norm): 15.78 - Irreversibility: 1.0