Rina teaches the dungeon core to convert audience call-and-response into power during a license audit that Voss tr...
The dungeon core refused to pulse unless Rina sang at it.
Not loudly. Not beautifully. Just enough for the amethyst stone in the Core Booth to answer with one grudging blink. Rina stood barefoot on the chalked routing circle, palms pressed to two copper rails, humming a scale she had once used for live-show warmups while Talia Renn counted debt ticks on a slate.
"Again," Talia said.
Rina stopped. "You said that like a doctor with bad news."
"I am an accountant. We are worse." Talia tapped the slate. "Applause mana from lobby activity decays before it reaches the storage vein. Your core likes call-and-response patterns. It does not like loose cheering."
Momo sat on a stool wearing a tiny BREAK sign. Brakka guarded the booth door. Outside, a provisional audit crowd filled the lobby lane: families, two registered heroes, three Solmates with guarded faces, and Inspector Palm with his red seal bottle.
One more person stood at the back in a white producer's coat.
Voss Veln had not aged since Rina last saw him behind a rehearsal mirror. Smooth hair, silver cufflinks, smile arranged for cameras that were not there. He looked at Hearthbeat's cracked walls as if choosing where to hang the foreclosure notice.
"Miss Sol," he called through the booth window, "the Crown Entertainment League worries about unsafe nostalgia attractions."
Rina's fingers tightened on the rails. The core spat a warning spark into her palm.
Talia did not look up. "Emotional spike. Inefficient."
"Put that on my fan page."
"I bill extra for jokes during audit."
Inspector Palm stepped into the booth doorway. "Manager Sol, begin the approved demonstration. Show nonlethal mana growth, visible safety routing, and payment records for monster staff."
Voss lifted a folder. "And answer one concern. Does your dungeon derive revenue from the same public misconduct that ended your idol contract?"
The room hushed hard enough for Rina to hear rain tapping the repaired bell outside.
There were easy answers. None were safe. If she denied too sharply, the old clip became the show. If she performed hurt, Voss would package that too.
Momo's stool creaked.
Rina looked at the slime, at Brakka's capped horn, at Talia's slate, at the crowd waiting beyond the glass. A chorus was not one voice made louder. It was a room taught when to answer.
"Hearthbeat earns from posted tickets, mascot stamps, encore clauses, and registered lobby viewing," Rina said. "My old career is not an attraction."
Voss smiled. "Then why are they here?"
A Solmate in the front row flinched. Kai Arden, leaning against the far wall with his stream crystal dark for once, looked ready to speak and ruin everything.
Rina raised one hand before anyone could defend her badly.
"Because the slime is cute," she said.
Momo puffed up.
The crowd laughed. Not huge. Enough. The core blinked twice.
Talia's chalk moved. "There. Responsive pattern."
Rina turned to the booth speaking horn. "Audience test. When Momo bows, clap twice. When Brakka drops the red flag, stop. If you miss the stop, the route fails and Inspector Palm writes something expensive."
Palm's mouth twitched. "Accurate."
Voss's smile thinned. "Crowd games do not prove dungeon stability."
"No," Rina said. "They prove routing."
She nodded to Brakka.
The minotaur opened the booth door. Sound rolled in: damp coats, nervous shoes, children whispering Momo's name. Rina tapped the copper rail with two fingers. The lobby lights dimmed to a soft pink that hid the worst ceiling stains and left every yellow safety line bright.
"Momo, first bow."
Momo slid to the blue mark and bowed. The audience clapped twice. Rina hummed the response note under the sound, guiding the core to catch the claps as paired beats instead of messy noise. The amethyst stone warmed under her palms.
APPLAUSE MANA ROUTED: 4.
"Second bow, smaller."
Momo bowed. Two claps. A little cleaner.
Brakka dropped the red flag. The room stopped.
No late clap. No child crossing the line. No hero pretending not to understand because rules were for other people.
Rina felt the core drink the silence too. That startled her. The dungeon did not only feed on fear and applause. It fed on anticipation, on a room holding itself ready.
Voss stepped closer to the glass. "A parlor trick."
"A safety drill," Inspector Palm said.
Talia underlined something on the slate with brutal satisfaction.
Rina shifted the melody. Not her debut song. Never that. A work chant, lower and easier, with a gap after each phrase.
"Gate rings," she sang.
The Solmates answered first, awkward but audible. "Guests pay."
"Lights rise."
This time Kai joined, dry as sand. "Heroes stay."
The families picked it up on the third pass. Momo bowed on the beat. Brakka lifted and lowered the red flag. The core brightened, not in a glamorous burst but in clean rings that ran through the booth rails and out under the lobby floor.
APPLAUSE MANA ROUTED: 19.
SAFETY THRESHOLD: STABLE.
Rina's palms burned. The copper rails were not meant for live routing this long. Talia saw it and hissed, "Release on the next stop."
Voss saw it too. His eyes sharpened. "If the manager cannot safely conduct her own attraction, the League can recommend suspension."
Rina wanted to let go. Her skin wanted it more than pride did.
Then Momo missed the blue mark.
Only by a handspan. Enough to wobble toward the yellow line. A child leaned forward, delighted, and the old room shape almost broke: guest reaching, monster drifting, inspector writing, Voss smiling.
Rina cut the chant with a heel stomp.
Brakka's red flag dropped.
Kai moved before the child crossed, blocking the lane with his scabbard. "Line."
The child froze.
Momo sucked back to the mark, trembling.
Silence held. The core drank it. The safety threshold climbed one more point.
Inspector Palm stamped the audit ledger.
"Provisional status extended," he said. "Nonlethal growth demonstrated. Staff payment records acceptable. Install permanent rail insulation before any larger routing."
The lobby erupted. Rina let go of the rails before the cheer could knock her over. Talia caught her elbow with one hand and wrote the repair cost with the other.
Voss waited until the applause thinned. He leaned close to the booth window, voice pitched for Rina and no one else.
"Festival eligibility requires moral standing. Keep chasing my watermark and I will make the next clip look recent."
Rina looked at her burned palms. The pain made the room wonderfully simple.
"You just admitted there will be a next clip."
His smile vanished for half a second. Not long. Long enough.
The core chimed.
CHORUS SLOT UNLOCKED.
REQUIREMENT: SIX CONTRACTED PERFORMERS BEFORE WEEKEND CAPACITY EXPANSION.
Talia read the message and gave a short, humorless laugh. "Congratulations. Your dungeon learned harmony and immediately became understaffed."
Outside the booth, Momo was still bowing because the crowd kept clapping. Brakka had one hand on the red flag and the other on Kai's shoulder, stopping the hero from pretending he had not helped.
Rina flexed her aching fingers.
"Then we recruit," she said.
Voss's reflection hovered in the glass behind her, already turning away to plan the next sabotage.