His name is Tada.
I know this the way I know the combination to the bar lock and the tension angle of a cylinder lock and the fare from Kōtō ward to Kōenji before the meter shows it. Saitō's memory doesn't give me full files. It gives me flashes, impressions, the emotional residue of repeated contact. Tada is someone Saitō saw regularly enough that his name lives in the body's reflex layer rather than in any retrievable narrative.
That's not reassuring.
The fact that I know his name and feel, in the muscles of this borrowed chest, something that functions like wariness rather than fear, tells me Tada is someone Saitō respected in the specific way you respect things that can hurt you.
He's still standing in the doorway. Still assessing. The friendly expression hasn't moved.
Thirty seconds of conversation before the other option becomes preferred.
I run the calculation the only way I know how, which is not the way Saitō would have run it. Saitō would have read the body language, the micro-signals, the weight distribution and the position of Tada's hands and built a physical response in the time it takes most people to identify there's a problem. I don't have that. What I have is two years of economics seminars and the particular skill set of someone who has spent his entire adult life understanding how people make decisions under constraint.
Tada wants the drive.
He doesn't want a second body this week.
He is operating under instructions that prioritize retrieval over elimination, which means someone above him has decided that the current situation is already complicated enough without adding a murder in Kōenji to a murder in Shinjuku on the same morning.
He has a principal. The principal has a risk calculation. I need to make that calculation change.
"Tomura knows you're here," I say.
Tada's friendly expression doesn't move. "Of course he does."
"I mean he knows specifically. Location, time, objective." I hold the bag at my side, not offering it, not pulling it back. Neutral. "I called someone before I came here. Someone who is logging this conversation in real time."
A pause. "You're bluffing."
"I'm an economist," I say. "I don't bluff. I model outcomes." I watch his eyes. "The outcome where you take this bag and walk out is the one Tomura wants. It's clean, it's fast, and it closes a problem." I pause. "The outcome where you don't take this bag is the one I want. But neither of those is the most interesting outcome."
He tilts his head. Fractional. It's the first non-controlled movement he's made.
I have his attention.
"The most interesting outcome," I say, "is the one where Tomura doesn't get the drive because the person he sent to retrieve it made a different decision. Because someone with Tada's experience looked at the situation and understood something his principal hasn't understood yet."
"Which is."
"That the drive isn't the problem anymore." I let that sit for exactly two seconds. "Mizore Yuna worked with a contact inside the Metropolitan Police for four months. Whatever is on this drive, she already had enough of it to build a preliminary case. That case exists in notes, in copies, in the head of someone who walked out of the Shinjuku precinct this morning with a personal notebook and no obligation to hand it over." I watch him. "Tomura can have the drive. He cannot unwrite four months of parallel documentation."
Tada is very still.
"He doesn't know about the contact," I say. "Does he."
The stillness answers me.
"He thinks Mizore was working alone," I continue. "He thinks last night closed the source. He thinks the drive is the last physical evidence and once it's gone the case evaporates." I let the bag hang at my side. "He's wrong. And the person who brings him the drive without telling him he's wrong is the person standing in this doorway in Kōenji having the wrong conversation."
A long silence. Old paper and cold air and the distant sound of the street outside, ordinary morning commerce indifferent to everything happening in this narrow dark room.
"You're trying to make me feel responsible for his miscalculation," Tada says.
"I'm telling you that you are responsible for it, the moment you walk out with that bag and say nothing." I meet his eyes. "Ryūsei survives because it doesn't make mistakes twice. Tomura is about to make a very large mistake for the second time in twelve hours. The first time, he missed Saitō. The second time, he's going to miss a Metropolitan Police inspector who has been building this case in parallel for four months and who is currently, as of approximately forty minutes ago, no longer bound by any institutional obligation to protect his position."
Tada looks at the bag.
I watch him look at it.
The thing about people who operate in structures like Ryūsei is that their loyalty has a geometry. It extends upward along lines of usefulness and self-preservation and it bends when the person above them begins to represent more risk than protection. Tada has been standing in a closed bookshop in Kōenji for ninety seconds and in that time I have tried to make Tomura more expensive than I am.
I don't know if it worked.
He looks up from the bag to my face.
"The contact," he says. "Inside the Metropolitan Police. You know who it is."
"Yes."
"Tomura will ask me."
"Tell him Saitō wouldn't confirm it." I pause. "That's true. I'm not confirming it."
Another silence. Tada does something with his jaw that might be the physical expression of a decision being made in the part of the brain that handles risk architecture. He looks at the bag one more time. He looks at the door behind him, at the street, at the thin gray light pressing through the window paper.
"The drive stays with you," he says. "For now."
"For now," I agree.
"When Tomura finds out about the contact, and he will find out, the calculation changes." He says it without inflection. Informational. "You understand that."
"I understand it."
He looks at my face with the specific attention of someone filing a thing away for later use. Then he does something I don't anticipate. He reaches into his jacket and takes out a phone and holds it out.
I look at it. I don't take it.
"Saitō's," he says. "It was in the apartment when we swept it this morning. Before the police arrived." A pause. "We swept it before we called them."
The words land with the particular weight of a thing that has just rearranged several other things. Ryūsei swept the apartment before calling the police. Which means they staged it. Which means last night wasn't an external operation using Saitō's space. Last night was Ryūsei, and Tomura, and someone inside the organization who decided that both Mizore and Saitō needed to be closed on the same night.
But Saitō's phone.
They kept it. They didn't destroy it. They brought it here, to a man sent to retrieve a drive, and he's holding it out like it's a thing I should have back.
I take it.
"Why," I say.
Tada's friendly expression returns. Still doesn't reach his eyes. "Because Saitō and I have worked together for four years and whatever you are, you're wearing his face." He drops his hand. "And because the drive isn't the only insurance he left."
He walks out.
The door doesn't close behind him. Cold air moves through the gap and I stand in the bookshop holding Saitō's phone and the waterproof bag and the specific silence of a room that has just been evacuated of threat without being evacuated of danger.
I wait thirty seconds. Then I move to the window, work a gap in the paper, and watch Tada walk to a car parked on the opposite side of the street. He gets in. The car doesn't move immediately. He's reporting in.
Telling Tomura what, exactly, I don't know.
I take the pre-paid phone and call Nishida.
He picks up before the first ring completes. "Where are you."
"Kōenji. The bookshop. I found the cache." I watch the car across the street. Still not moving. "Ryūsei was here. One operative. He left without the drive."
A silence. "He left without it."
"I gave him a reason to." I pause. "He also gave me Saitō's phone. He said the drive isn't the only insurance."
"Saitō's phone." Nishida's voice has shifted into a register I haven't heard from him yet. Careful. Almost careful. "Turn it on."
"It's already on." I look at the screen. No passcode. Which is either trust or intention. "There are three unread messages. All from the same contact. The contact is labeled with a single character." I look at it. "It's the kanji for south."
"Minami," Nishida says quietly.
"You know that name."
"It's not a name. It's a direction." He pauses. "And a person. Inside Ryūsei. Someone who was feeding information out for at least two years before Saitō left." Another pause, longer. "I didn't know they were still active."
The car across the street starts moving. It pulls into traffic and disappears toward the main road and doesn't look back.
I look at the three unread messages from a contact called South.
The first was sent four days ago: They know about the journalist. Move the cache.
The second, two days ago: Tomura has the meeting location. You need to run.
The third, sent at 23:14 last night, forty-three minutes after Mizore Yuna's estimated time of death: I'm sorry. I tried to warn you in time. The drive has everything. Use it.
I stand in the cold bookshop and I read the third message twice.
Somewhere in Tokyo, a person called South sent a message to a phone they believed belonged to a dead man.
They don't know Saitō survived.
They don't know what's wearing his face.
But they left three messages anyway, which means they're still there, still inside, still willing to communicate with a ghost. Which means they're either the most valuable asset in this entire situation or they're the reason Saitō almost didn't survive last night.
I can't tell which yet.
I pocket both phones.
I pick up the waterproof bag.
I walk out of the bookshop into the gray Kōenji morning and I think about a person called South who is sorry, and a drive that has everything, and a police inspector in a dark blue sedan somewhere in this city who doesn't know that the case just became significantly larger than the one she walked out of the precinct carrying.
I need to find Rei.