Chapter 6: Too-Clean Signal

The wax line on the acetate hadn’t even dulled yet when the receiver puck—Pact-issued, palm-sized, the twin of the one Kei kept clipped to his own belt—warmed in Semireiya’s palm.

Kei was still at the crate-lid “table,” one forearm pinning the map flat, the other hand tidying the wax pencil like he could organize the city by cleaning up small things. Usagi sat cross-legged beside the film, finishing her third tracing of the exit route. She didn’t look up until the puck clicked.

Just under thirty-six hours remained until Kei’s planned window. Which meant this was not that window. This was the kind of problem that arrived early, ugly, and personal.

Kei’s eyes lifted only slightly. “If that’s a clean call, you answer it. If it’s too clean, you still answer it. You just don’t obey it.”

Semireiya didn’t respond. She set the puck to the lowest output and listened.

Static slid through, then a voice that tried to sound casual.

“Yo, leadership gremlin. You alive or did you finally turn into a solemn statue?”

Usagi jolted. Relief hit her too fast, too hard. “Rikka…!”

Semireiya held up two fingers to Usagi. Wait. Then she spoke into the puck, flat and precise.

“Rikka. Confirm.”

A beat. A soft laugh with a rough edge. “Confirm. Wow. You’re really going to talk like a checklist now? You’re getting older.”

Semireiya didn’t smile. “Where are you.”

“West Old Belt, kind of.” Rikka’s voice dropped lower, then rose again. “I’m not doing a full address. I don’t want your fan club showing up.”

Kei’s eyes narrowed slightly. “Fan club?”

Usagi’s mouth moved, then closed. She knew better than to explain. Explanations took time, and time was always what you didn’t have.

Rikka kept going. “I was scanning a line that looked wrong. Like, wrong-wrong. Not the usual ‘this city is broken’ wrong.” Her breath hit the mic in a short burst. “And then I heard you.”

Semireiya’s spine went tight. “You heard me.”

“Yeah. Like… you calling me by name.” Rikka’s laugh didn’t land right. “I know, I know. You’re going to say you didn’t. I didn’t follow it. I’m not that stupid.”

Semireiya’s voice stayed even. “Then what happened.”

“Curiosity happened.” Rikka said it like it was a crime. “I peeked around the corner to see what kind of unit would bother imitating you. And then I got hit with a net that didn’t look like a net until it was already around my throat.”

Usagi’s hands flew to her own collarbone.

「だめ...！」No...!

Semireiya reached out and covered Usagi’s fingers with her palm, firm and steady. Usagi’s breathing stuttered once and slowed.

Rikka’s voice continued, faster now, as if speaking quickly could outrun the next thing. “They’re not going lethal. That’s the part that scares me. They said ‘clean room’ like it’s a clinic and I’m the infection.”

Kei’s expression hardened. “They take her alive.” A beat. “Conversion kits moved through Bridge-06 last week. Cargo like that doesn’t ship for corpses.”

Semireiya didn’t ask how he knew the rest. It didn’t matter. The truth sat there anyway.

“Rikka,” Semireiya said. “Describe the unit.”

A pause. The channel hissed. “Not a normal Purifier. There’s a handler. I can’t see their face, but I can hear them fine.” Rikka’s breath shook. “And there’s something else. A voice. Not like on the speakers. It’s inside the comm. It keeps trying to talk like it cares.”

Usagi’s eyes went wide. She spoke, barely audible.

「ラッチャー...」Latcher...

Semireiya nodded once, slow. “Don’t answer it.”

“I’m not,” Rikka snapped, then softened immediately, like she hated that she’d snapped at them. “I’m not. I’m telling you because… because it keeps changing.”

“Changing how,” Semireiya asked.

Rikka hesitated. The smallest gap. “It tried to sound like Sorani for half a second.”

The name didn’t fill the room with warmth. It filled it with weight.

Usagi’s lips parted.

「ソラニ...」Sorani...

Semireiya cut in, gentle but strict. “Stay with me, Usagi.”

Usagi nodded hard, eyes down.

Semireiya brought her attention back to the receiver puck. “Rikka. Give me something only you would say. Now.”

Rikka let out a laugh that tasted like pain and refusal. “Tell Sorani his vending machines are crimes. Also tell him I want royalties.”

Semireiya’s chest loosened by a fraction. Real. Messy. Hers.

“Good,” Semireiya said. “Listen. Hold your channel. Don’t follow any routing prompts you didn’t initiate. If they give you a turn order, you treat it as a weapon.”

“Yeah,” Rikka breathed. “Yeah, I know.”

Then a second voice slid under the channel, calm and polished, the kind of calm that assumed it deserved obedience.

[!]Proceed to cleansing.

Usagi flinched as if she’d been struck.

The voice continued, almost kind.

[!]Pulse-marked derivative detected. Do not resist. Mercy will be applied.

Kei’s jaw tightened. “They’re running doctrine in the open.”

Semireiya’s thumb hovered over the band controls. She didn’t open a broadcast handshake. She didn’t try to trace the source with a shout. She did the opposite: she made herself smaller inside her own system and listened for the flaws.

The message was too clean. No pipe resonance. No random under-city interference. No human breath where breath should live.

A planted packet.

Rikka’s voice returned, strained and hurried. “Sem. They’re giving me coordinates. I know it’s bait. I know. But I’m also telling you the truth: the transfer point is real. I can hear the rails. I can hear the lift motor. They’re moving me under something like Bridge-06.”

Semireiya’s gaze flicked to Kei. He didn’t speak, but his eyes sharpened. Bridge-06 fed into multiple siphon runs that spat into Gray Block 17’s perimeter.

“Rikka,” Semireiya said. “Say the coordinate anyway.”

Rikka did. Numbers, grid labels, a route segment name that sounded like it belonged on a maintenance placard.

It landed perfectly.

Too perfect.

“They left my channel open,” Rikka said, quieter now, like she’d only just let herself hear it. “That’s not mercy. That’s a fishing line.”

Usagi’s voice came small. “But if it’s real…”

Semireiya’s reply was quiet, and it was not comfort. “If it’s real, it’s real on purpose.”

Kei exhaled slowly. “They want you to chase straight into the net.”

Semireiya kept her eyes on the puck. “Rikka. How long.”

Rikka’s breath hitched. “I don’t know. They’re cycling shutters. I heard a timer tone twice. Short cycles. Like they’re setting a corridor.”

Semireiya’s mind lined up options like tools. Fast route. Quiet route. Safe route.

“Do the thing you hate,” Rikka said, and her voice cracked on the last word. “Trust your instincts.”

Semireiya opened her mouth to answer.

The channel cut.

Not a slow drift. Not a gradual loss. A sever so clean it felt like a door slammed in a room with padded walls.

Usagi made a sound that wasn’t a word.

Semireiya held the puck to her ear anyway, as if her presence alone could pull sound back.

Nothing.

Kei moved first, practical as gravity. He slid the acetate-covered map closer and pinned it with his wrist. “If she said Bridge-06, there are three likely transfer corridors. Two are under Purifier sweep. One is under civilian maintenance traffic.”

Usagi blinked. “Civilians…?”

“Workers,” Kei corrected. “People who keep pumps running so the city doesn’t drown in its own waste. Nullists don’t like to admit those people exist.” He tapped the third corridor. “This one is loud. That helps you.”

Semireiya stared at the map. The third corridor was a longer route, but it had noise cover and human movement. It also meant a new kind of risk: witnesses, collateral, a moral trap waiting to happen.

Kei’s voice dropped. “You’re going after her.”

It wasn’t a question.

Semireiya nodded once. “Yes.”

Kei reached into his coat and pulled out a narrow strip of printed paper, creased and worn. Not a screen. Not a live feed. Something that could survive a dead grid.

“Patrol cadence,” he said. “Half a day old. It might already be wrong. But it’s better than guessing.”

Semireiya didn’t take it immediately. “What do you want.”

Kei’s gaze held hers. “A name. A unit marker. A doctrine phrase that confirms which Purifier line is running that corridor. Something I can hand to the Pact and say: this is where they’re tightening.”

Usagi’s shoulders drew in, protective. “You’re asking for proof while she’s…”

Kei’s eyes softened again, just a little. “I’m asking for proof because if you bring her back and I learn nothing, the next time they take someone, I can’t stop it. I don’t have enough people to play hero on faith.”

Semireiya understood the math. It wasn’t cruel. It was survival.

“You’ll get something,” she said.

Kei nodded and shoved the cadence strip toward her. “Then you’ll need this too.”

He tossed a small bundle across the crate lid. A cheap jammer the size of two fingers taped together, made from scavenged junk and Pact glue. It looked embarrassing. It also looked like it might work once.

“Don’t keep it on,” Kei warned. “Pulse it. Short bursts. Enough to trip their optics and then vanish again.”

Semireiya pocketed it.

Usagi stood, pulled her mesh cloak tight around her shoulders, and forced her hands to stop trembling by clasping them behind her back. She looked at Semireiya with eyes that had stopped trying to smile through fear.

「行こう。」Let's go.

Semireiya nodded. “Stay close.”

Usagi’s lips pressed together, then she answered without hesitation.

「うん。」Yes.

Kei killed the lamp. The room dropped into the micro-cache’s real state: near-dark, edges softened, the kind of space that existed only when nobody was paying attention.

He opened the door a hand’s width and listened. Semireiya listened too. Not for footsteps. For the absence of them. For the pressure of a corridor holding its breath.

Kei shut the door again. “Two minutes,” he said. “Then a sweep passes and you get a gap.”

Semireiya checked her wristband. The triangle icon still pulsed, patient, waiting for her to choose a line she didn’t want to cross. She didn’t touch it.

Not yet.

Usagi stepped closer until her sleeve brushed Semireiya’s arm. The contact was tiny. It meant everything.

Kei opened the door on the next count. The corridor outside was damp and narrow, lined with utility pipes and old signage that no longer matched reality. Somewhere above, a pump motor ran hard, its vibration traveling through the concrete like a heartbeat.

Semireiya moved first, silent as practice. Usagi followed in her wake, mesh cloak breaking their outline into uncertainty. Kei waited until they were ten steps out, then closed the door without a sound.

At the cache edge, as Semireiya’s boot cleared the threshold, the /Root pulse returned—one clean beat that was not the duct, not the Hymn, not the pumps, not anything except itself. The band warmed, a single blush. The coordinate delta in her buffer brightened, then sat still.

“I heard it,” Usagi whispers, astonished at her own certainty, even now.

Semireiya nods once. “うん。”Yeah.

There wasn’t time to hold onto it.

“Plan?” Usagi asks, already moving.

“Bridge-06,” Semireiya says. “Third corridor. Loud, Kei said. That’s our cover.”

Usagi bumps her shoulder against Semireiya’s, precisely. “了解。”Roger.

Semireiya doesn’t look back.

Ahead, the under-city’s long throat waited, full of routes and traps and people who didn’t want to be seen.

She set her pace to the pump’s rhythm and let her mind do what it did best when fear tried to swallow it: turn fear into a plan.

Rikka was alive.

That was enough.

For now.

//Packet relay: NULLIST_LINE — STATUS: Cleansing route confirmed
//Recipient: Purifier Corridor Unit — Bridge-06