Marcus calls at eight-fifteen — school run done, twenty minutes before he has to be anywhere.

"Wolves lost," he says, before I've finished saying hello.

"I saw."

"You didn't see. You checked the score at midnight and felt nothing."

"I felt something."

"You felt data. It's different." A car door, keys, the acoustics of his kitchen — I know it well enough to place it. "They're going to finish mid-table again. I've made peace with it. Have you made peace with it?"

"I've never not been at peace with it."

"That's the saddest thing you've ever said." Something set down — mug on counter, that ceramic knock. "How's the rabbit?"

"Stable. Three days of stable margins."

"That's good though."

"It's promising. Seo-yeon says promising."

"Seo-yeon," he says, meaning a whole conversation I'm not having.

"She's the lead researcher, Marcus."

"I know who she is. You've mentioned her."

I haven't mentioned her that much. The appropriate amount for a lead researcher on a project I'm spending sixty hours a week on. Out the window, the street quiet, sky the color of old concrete, a woman walking a dog that is extremely small and extremely determined about something on the far sidewalk.

"Mom called me Tuesday," Marcus says.

The dog disappears around the corner. "Yeah."

"She said she'd talked to you."

"Sunday."

"She said you sounded good."

I don't answer this. The coffee's gone cold in my hand and I drink it anyway. Sunday I'd sat in the car outside the apartment for twenty minutes after we hung up, not ready to go upstairs. She'd asked about the trial like she always asks now — not in passing, not work-talk, but carefully, following up on things from the last call, remembering the numbers. She has an oncologist, a treatment plan, three years of something that is working, mostly. A prognosis that requires not looking at it directly to hold in your head for any length of time.

"She wants to come down," Marcus says. "For a weekend. She was asking about dates."

"Tell me when and I'll be there."

"That's what I told her you'd say." A pause. "She seemed — I don't know. Like herself. More than last month."

"I thought so too."

"Caleb."

"Yeah."

"Nothing. I just." He stops. The kitchen sounds. This happens maybe three times a year, Marcus not finishing a sentence. "I just wanted to say that."

I know what he wanted to say. We've been having this conversation in pieces for three years — the same conversation that routes around itself, approaches and backs off, both of us triangulating around something we've agreed not to name. I love my brother. This is how we do it.

"She's going to be fine," I say.

"Yeah."

Neither of us believes this with the confidence the words need. We both know that. The saying is its own kind of work and the work needs doing.

We talk a few more minutes — a staff meeting, the school thing Thursday, a mutual friend's birthday Saturday that sounds more obligation than occasion. I say I'll try to make it. He says you won't. He's probably right. We say goodbye too quickly, both of us pretending the call didn't land how it did.

I stand at the window for a long time after.

The bus goes by. The sky is the same color it was twenty minutes ago, that flat even gray that never resolves into weather. I think about Mom's kitchen — the table, the light she says is bad for plants but good for thinking, the smell of whatever she puts in the laundry that I've been breathing my whole life. I shift against the windowsill.

The ache is there when I stop moving. Both sides of my chest, deep — not sharp, not alarming, more like pressure that has been there a while and I've only just stopped being distracted enough to notice it. I press my fingers against the left side and find the skin faintly taut, and directly under the nipple there's a tenderness that makes me pull my hand away. I stand there probing at it for a moment. Two years hunched over a keyboard. I should stretch more. I open the overnight data.

♦  ♦  ♦

The overnight data is good.

Not conclusive — Seo-yeon would correct me on that — but good. Margins holding, nanobot adhesion rate up four percent from Monday's run, the inflammatory response dropping to something that looks almost calibrated. I go through the logs, cross-reference the pathway adjustments against the previous two trials, and the pattern is there: the targeting algorithm converging in a way that looks like the bots are learning the tissue. Not learning exactly, Seo-yeon would correct me on that too. But converging.

I tell ARIA the margins are holding.

Yes. The adhesion improvement is consistent with the revised diffusion parameters. I'm running a projection.

"How long before we see actual regression?"

Difficult to say with confidence. Current trajectory suggests measurable change in eight to twelve days. The rabbit's immune response is a variable I can't fully control for.

"Best case."

Six days. I wouldn't plan around best case.

I wouldn't either. I tell her this and she says: I know. Something slightly different in the two words — not warmer exactly, more weight to them than last week. I put it down to the data.

I eat lunch at my desk. Somewhere in the early afternoon I shift back in my chair and notice the seat feels different — more give to it, pressing up differently than I remember. I make a note to check the mechanism. I forget it almost immediately.

Three hours of incremental work, the algorithm, a procurement video call that goes twenty minutes long. I get up twice — once for coffee, once for no clear reason, just to be standing a moment.

I'm back at my desk, not quite doing anything, when I hear Seo-yeon's voice from the corridor.

Low. Controlled. The register she uses when she's selecting each word before it leaves her.

I can't hear the other side — she's on her phone. I'm not trying to hear, but the corridor runs alongside the lab and the door is ajar. I know you feel that way. A pause. I have been trying to help you. Longer pause. I don't think that's a fair characterization.

I look at my screen.

A silence long enough that the call might have ended, and then: I think we both know this hasn't been working.

After that, nothing. I move a window, open something, close it.

She comes back two minutes later, sits, opens her laptop. Posture exactly as it always is — straight, unhurried, the self-possession that makes her unreadable unless you know what you're looking for. I know what to look for. I still can't read her.

Priya straightening in her chair when Seo-yeon said sit up. Jana a year ago, quiet voice with no heat in it: she makes me feel like a project.

Seo-yeon was trying to help. I believe this. Priya felt managed and Jana felt managed and both things are true simultaneously — the trying-to-help and the managed-feeling. The gap between them isn't a gap in her intention. It's something harder to locate. The distance between understanding what someone needs and knowing how it feels to need it.

I'm not sure I'd do any better. I'm not sure this thought is as neutral as I'm presenting it to myself.

At five-thirty, without looking up: "The adhesion numbers are interesting."

"Yeah."

"The diffusion adjustment was hers?"

"ARIA's. Last night's run."

She makes the sound that means: noted. "If this holds through the weekend I want to run a full regression on the pathway data. All twenty-three trials."

"I'll set it up."

She nods once, back in whatever she's reading. I watch her for a moment — the pen turning, one two three, then writing — and look away before she looks up.

I close the algorithm and start on the data prep for tomorrow.

♦  ♦  ♦

I call her from the car, parked outside the apartment, engine running for the heat.

It doesn't occur to me to switch to video. It never does with Mom — she's not someone who needs to see your face when she's talking to you, or maybe she understands that voice-only makes certain things easier. The phone propped against the dash, her voice filling the car.

She asks about the trial. She always asks about the trial. Not the way people ask about work in passing, as a formality before the real conversation — she asks with actual attention, follows up on things I mentioned last time, remembers the numbers. Three weeks ago she said: what does better adhesion actually mean, mechanically? And I found myself explaining it properly, how you explain something to someone who is genuinely trying to understand rather than waiting for you to finish.

I tell her about the overnight data. The four percent improvement.

"That's the one you've been trying to get for months," she says.

"Yeah."

"That's good, Caleb."

"It's promising."

A small sound — recognition rather than laughter. "You sound like her."

"Seo-yeon."

"You've mentioned her."

I let this pass.

There's a pause, comfortable, the kind we've always been able to do. Outside the windshield a man is walking a bicycle rather than riding it, for reasons that aren't apparent. The street is almost empty.

"You sound softer," she says.

The word lands somewhere specific and I'm not immediately sure where.

"Than last week?" I say.

"Than lately." A pause. "It's not a bad thing."

I watch the bicycle man reach the corner and stop, deciding something. "I'm tired, probably."

"Maybe." She doesn't push it. Mom rarely pushes — she says the thing once, clearly, and leaves it, which is its own kind of pressure. "You know you can tell me anything."

She says big things by making them small. Large statement, casual register, take it or leave it, either way she's given it to you. I've spent my whole life either grateful for this or quietly wrecked by it, sometimes both at once.

"I know, Mom."

"Good."

We talk a while longer — Marcus, the birthday she's considering having instead of ignoring, the garden and whether this is the year she finally accepts the light is wrong on that side. She sounds like herself. More than last month, I think.

I sit in the car for a while after we hang up.

Softer. I turn it over. I don't know what she heard — something in my voice I can't hear from inside it, some quality she can detect because she's been listening to me since before I knew I had a voice. I don't know what it is.

---

The Premium Patreon version of this section includes images of Caleb at the lab and examining his chest.