Kai lay in the moss, trying to remember how breathing worked. His ribs hurt. His shoulder screamed. Something warm ran down the side of his head. Rin's voice cut through the chamber.
"Kai!"
Kai forced his eyes open. Across the room, Rin was a blur of pink braid and chain, still moving, still alive. Good. She was far. Too far to see details. His illusion pulsed weakly on his skin like a wet sheet.
Useless.
Kai swallowed blood. He let the illusion go. The pressure behind his eyes vanished. The drain stopped. The world sharpened. For a second, he just lay there, breathing, letting the pain settle into something he could use. Then the Matriarch moved.
Her old face tilted toward him, pleased, and the ceiling plant above pulsed again. Water poured. The shield thickened. Kai pushed himself up on one elbow and hissed.
"Yeah," he whispered. "You like me. Great."
A vine snapped toward him. Kai materialized a flat shield in front of his face. The vine hit with a crack that rattled his teeth. The shield held. Kai rolled, got his feet under him, and staggered upright. On the other side of the room, Rin saw him stand and froze.
Her eyes widened. Rin shouted, "You're bleeding everywhere!"
Kai glanced up. Saw red strands hanging in his face. Wet. Dark. He realized, suddenly, what she was seeing from that distance.
That's just my hair.
He barked a laugh that turned into a cough.
"Don't worry!" he shouted back.
Rin stared like she didn't believe him. Kai wiped his forehead, his hand came away with a little real blood.
Well, mostly my hair.
Then a spriggan lunged at the wounded crossbow guy. Rin snapped back into motion.
"Don't die!" she yelled at the duo, like that was helpful advice, and flung her chain.
The blade hooked a spriggan mid-air and slammed it into the stone. The spearwoman drove her spear down and finished the last spriggan with a grunt.
"Thanks!" she shouted.
Rin yelled back, "Later!"
Kai's focus returned to the Matriarch. Fire didn't work. Not like this. Every test had taught him that. Any flame that hit the shield hissed out into steam. He could waste mana all day and only make fog. But the shield still had a rule. It reacted. It drank. It called for more. Kai lifted his hand and formed a small fireball. Cheap. Tight. Controlled. He threw it. It hit the water skin and vanished with a soft burst of steam. The ceiling plant pulsed. Water poured harder. Kai's eyes flicked to the basin. The water level had climbed. The vegetation ring sloshed now when the Matriarch shifted. He threw another small fireball. Steam. Pulse. More water. Another. Steam. Pulse. More water.
The Matriarch's face twisted in irritation. The shield thickened again. Kai kept his distance and moved sideways, circling just outside the basin's reach. A vine struck. Kai blocked. Another struck, lower. He tried to block and felt it catch his forearm. Pain flashed. He gritted his teeth and didn't stop moving.
Across the room, Rin was fighting spriggans off the duo, saving them inch by inch. The crossbow guy was limping now. His reload was shaky. The spearwoman looked like she'd been doing nothing but survive for the last ten minutes. They were both soaked, exhausted, and one mistake away from dying. Rin snapped her chain around the crossbow guy's waist and yanked.
"Hey!" he shouted.
"Shut up!" Rin shouted back. "You're coming with me!"
She dragged him behind a thick root, out of the swarm's reach, then turned and lashed two spriggans off the spearwoman's flank. The spearwoman didn't waste breath.
"Joren!" she shouted to her partner.
Joren coughed. "Mara, I'm here!"
Kai heard the names and filed them away without thinking. Rin made an angry sound and cut down another spriggan near Mara. Mara thrust her spear and pinned the last one to the floor. Rin's chain-blade finished it with a clean pull. For a heartbeat, they had space.
The Matriarch screamed. Not with a voice. With a wet, wooden vibration that made the chamber feel smaller. A jet of water shot from the basin toward Kai. Kai raised another shield. The impact slammed him back two steps. Cold soaked his side. His boots slid. He caught himself. The floor near him was still wet. But farther away, near Rin's side, it wasn't. The moss there looked duller. Less glossy. Less alive. The drip-drip had changed. It was still raining, but lighter, thinner, like the room was being drained. The basin sloshed again.
Almost full.
Kai swallowed and formed another small fireball. Steam. Pulse. The basin swelled. A vine struck his shoulder. He blocked late. The impact made his arm go numb. Kai's vision narrowed for a second. He steadied himself.
Not yet.
Rin dragged Joren a little farther back, then turned toward the Matriarch, chain ready. She flicked it once. Tried for a hit. A vine snapped out and blocked the chain mid-flight like it had been waiting for that exact attempt. Rin cursed.
"Of course," she muttered. "Of course she has a bodyguard vine."
Kai saw it. Two vines that reacted faster than the others. Not random strikes. Protectors. They weren't trying to kill. They were trying to deny openings. Kai then raised his hand again. A small fireball formed, cheap and familiar. He threw it. It hit the Matriarch's water shield and hissed into steam like every other one.
Then the steam tore. A thin shape pushed through the dissolving layer, fast and straight, like something had been waiting behind the flame. A dagger, still glowing at the edges, punched into the Matriarch's bark shoulder and sank just deep enough to matter. The Matriarch jerked. Her old face twisted, not in pain, but in surprise. Kai's breath caught.
"So you can be touched," he murmured.
Rin snapped her chain forward again, trying to thread it through the vines. A protector vine intercepted instantly, batting the blade aside like it was swatting a fly.
Rin's eyes flared. "Okay. Enough. I can erase those."
Her fingers tightened. The air around her chain prickled, the warning crackle of lightning building.
Kai shouted, "Don't."
Rin glanced at him, furious. "They're the problem!"
"They're not the problem," Kai snapped back. "They're doing their job. Let them."
Rin stared like he'd lost his mind.
Kai forced his voice calm. "Save it. One big shot. Not scraps."
Rin's jaw clenched so hard her cheek trembled. Then she swallowed the electricity back down, shaking with restraint.
"Fine," she hissed. "But if I die because of your plan—"
"You won't," Kai cut in. "Just trust me. Not yet."
The ceiling-root pulsed again. A final pour of water slammed into the basin, and this time it didn't settle. It swelled, rising to the rim with a heavy, eager slosh. Kai watched the level climb, watched the room grow quieter on Rin's side as the moisture got pulled toward the center. He wiped blood from his lip with his thumb and exhaled through his teeth.
Okay, now we can start.
Kai formed one more fireball. Steam. Pulse. The basin trembled. It was right there. On the edge. Kai changed the spell. He materialized a thin blade, like a throwing knife, and wrapped fire around it. Not to burn. To clear. He held it up, visible, obvious, almost insulting. The Matriarch's old eyes locked onto it. A protector vine snapped toward the knife. Kai threw. The vine caught it mid-air. Fire hissed against bark. The vine jerked back, burning. A second protector vine lashed out to smother it, wrapping around the first like a reflex. At the same moment, the Matriarch forced the water shield thicker, panicking for one beat. Everything defensive moved to Kai's side. The opening Rin had never been allowed to see finally existed. Kai didn't dodge the next strike. The offensive vine hit him full in the chest.
It felt like being kicked by a tree. Kai lifted off the ground, slammed into stone, and hit the moss hard. His breath left him. His shield shattered into mist. His mouth tasted like iron again. He forced air back into his lungs and screamed through pain.
"NOW!"
Rin froze for half a heartbeat. She looked at the Matriarch. She looked at the vines, all on Kai's side. She understood nothing. But she saw it. The perfect timing. Rin's jaw clenched. Her chain snapped forward. The blade punched through the water veil and struck the Matriarch's torso. It couldn't. It was already thick. Already overfed. Already forced into one place. Rin's hands shook. She didn't hesitate. She let go of the restraint she'd been chewing on since the start of this dungeon. Lightning exploded through the chain.
Not wild. Not branching. Not licking puddles. It went straight into the water skin and the body underneath like the whole basin had become a conductor. The Matriarch convulsed. Her bark cracked. Translucent water hardened for a second, then fractured like glass. The ceiling plant spasmed. Water stopped mid-pour, then resumed in a weaker stream. The Matriarch screamed again, this time with something close to fear. The water slid off in sheets and slammed into the basin with a violent splash. The Matriarch's body was exposed. Charred. Split. Smoking.
Rin cut the electricity. For half a second, the whole room was silent except for dripping and Rin's harsh breathing. Then the Matriarch swayed. Rin yanked her chain back and snapped it forward again. No lightning this time. Just steel. The blade carved into the cracked bark at the exact weak point she'd opened. The Matriarch's old face twisted. Rin pulled. Something inside the bark tore with a wet sound. The Matriarch collapsed into the basin, vines writhing, water splashing, and then she stopped moving.
Kai was on one knee across the room, shaking, trying not to fall over again.
Rin turned her head and shouted, raw, "KAI!"
Kai lifted his hand weakly. "Still here," he croaked.
Rin's eyes found him and she let out a laugh that sounded one inch away from crying. Noticing her gaze, Kai immediately remembered his face and decided to put his illusion back in place.
I should have enough mana to keep it going until nightfall. And I kept three points for the power, just in case.
Behind Rin, Mara and Joren stared at the basin in disbelief.
Joren swallowed. "Did… did you just…"
Mara blinked hard, staring at the floor. The stone around Rin's side of the chamber was… dull. Not glossy. Not slick. The moss there looked thirsty, the puddles reduced to thin stains. She looked back toward the basin. It was overflowing. Water sloshed high against the woven roots, pooling where the Matriarch stood like a reservoir.
"You…" she breathed, looking at Kai. "You kept baiting the shield on purpose."
Kai didn't answer at first. He was still on one knee, shaking, trying to stay upright.
But his gaze was steady. "I needed it to drink," he said hoarsely. "To pull everything into one place."
Mara's throat worked. "So the rest of the room would dry out…"
Rin turned her head sharply, finally connecting it. "You… you were setting the ground for me," she whispered.
Kai met her eyes, expression exhausted and stubborn.
"Yeah," he said. "Because if the floor stayed wet, you'd never be able to go all-in."
Rin's grip tightened on her chain.
Mara blinked at Rin, then at Kai, then at the dead Matriarch.
"What are you two?" she whispered.
Rin looked down at Kai like she had the same question.
"Come here," she ordered, and immediately realized she couldn't actually carry him across a cathedral-sized room.
Kai tried to stand. His legs betrayed him. He sat back down with a grimace. Rin started walking toward the basin instead, dragging her feet like they were made of stone. She stepped into the basin carefully. The vegetation underfoot felt warm now, like the dungeon was cooling down after a fever. Inside the Matriarch's chest, something pulsed faintly. A knot of wood and root, shaped like a heart. It wasn't bloody. It was glossy, dark, veined with green light. Rin reached in, grabbed it, and pulled. The heart came free with a soft snap.
The moment it left the body, the green glow inside it dimmed and stabilized, like it had become an object instead of a living thing. Rin held it up. Then she looked at Kai, and her mouth twisted into a grin. Kai stared at the heart, then at Rin. He managed a breathy laugh.
Rin pointed the heart at him like it was a nice grade from her teacher. Kai tried to nod and immediately regretted it. Rin's grin vanished.
"Hey," she said, quieter. "You're a mess."
Kai wiped his mouth with the back of his hand and came away red again. He sighed. Rin's eyes flicked to his head again. Kai stared at her. Joren limped closer behind her, supported by Mara. His voice was rough.
"We heard you shouting 'now'," he said. "That was… coordinated."
Rin answered for him, because Rin always answered.
"We're just that good," she said.
Above them, the ceiling plant shifted. The pulsing opening tightened, like a throat swallowing. The stream of water slowed, then stopped. The green light in the leaves softened, almost peaceful. The dungeon felt like it had exhaled.
A section of vines on the far side of the chamber loosened and parted, revealing a passage that hadn't been there before. It wasn't bright. But it was clear. An exit. Rin stared at it, then looked at Kai again. Her voice dropped.
"We're done," she said. "We're getting out."
Kai pushed himself up, wobbling, and forced a grin that hurt his face.
"Yeah," he said. "Let's go out."
Rin snorted.
"In one piece," she said, then glanced at his injuries and corrected herself, "Mostly."
Kai managed a weak laugh.
"Mostly works."