The portal fed the original Medalline portal. Two portals open simultaneously created a mana loop between them, each one reinforcing the other's stability, the combined output greater than either one independently. Breaking the loop required disrupting the mana flow at the secondary portal before the primary one could compensate.
I drove a spike of mana into the portal's intake field.
Not into the portal itself. Into the field around it, the mana pressure that kept the opening stable. The way you didn't stop a river by standing in front of it but by redirecting the flow upstream where the banks were still shapeable.
The portal flickered.
The demons emerging from it stumbled, the mana supporting their transit suddenly inconsistent, several of them dropping to the chamber floor disoriented. I swept them aside with a broad pressure wave, not individually targeted, just enough force to clear the immediate space.
The portal flickered again.
The loop between north and south was breaking. I could feel it in the mana field around me, the particular sensation of a sustained connection losing its coherence, the south portal in Medalline losing the reinforcement the north one had been providing.
Not closed yet. Disrupted.
Which was what I had come to do.
Closing it completely would happen when I was standing at both portals simultaneously, which required preparation I hadn't made yet and a choice I hadn't fully committed to yet because making it meant becoming something I had specifically walked away from.
But disrupted was enough for tonight.
The portal's output slowed. The mana flow dropped from the sustained flood it had been running at to something closer to a leak. The demons in the chamber were disoriented, the transit field inconsistent, none of them emerging cleanly.
I walked back to the passage entrance.
Aldren was still inside the barrier. He had not moved from the position he had been in when I cast it. He was standing with both hands at his sides and the expression of someone who had just watched something they had no reference point for and was waiting for the experience to become something they could process.
I dropped the barrier.
He looked at me.
At the chamber behind me. At the twelve demon units on the floor. At the portal running at reduced output, the heavy emergence flow disrupted into the slow, inconsistent seep of something that had lost its structural support.
"You." He said.
He stopped.
"The ambush in Branklore." He said. "The northern border. You let us kill you."
"I let you kill a clone." I said.
"Because you wanted out." He said.
"Because I was tired." I said. "Eight years of being a weapon for a man who slapped me in the throne room and called it discipline. Yes. I wanted out."
He looked at the chamber.
"We thought." He said. "All of us. Every king. We thought the plan worked because we were clever. Because we had coordinated it well. Because we had caught you off guard."
"You coordinated it fine." I said. "I let it work because it gave me what I needed."
He was quiet.
"You were never in danger." He said.
"No." I said.
"At any point." He said.
"No." I said.
He looked at the floor.
"Singrael." He said. "Winterly. Every kingdom that fell after you disappeared. If you had stayed."
"I wasn't going to stay." I said. "The emperor had been pointing me at people who didn't deserve to die for eight years. I was done."
"But now." He said.
He looked at the portal. At the reduced flow. At what I had done to it in under two minutes while twelve demon units were in the same chamber.
"You're going to close them." He said. "Both of them."
I looked at the portal.
At the mana field around it, disrupted, the loop with Medalline broken for now.
"When I'm ready." I said.
"What's stopping you now." He said. Not challenging. Genuinely asking.
I looked at the passage behind us. At the long way back through the occupied capital, through the territory that had been his kingdom, through the dark to the edge of Winterly where I had brought us in.
"I'm not the Hero." I said. "I left that. I'm not picking it back up because a situation became inconvenient."
He was quiet for a moment.
"Eryndor." He said.
"Yes." I said.
"If the portals close." He said. "If the demon lord falls. The occupation ends. The kingdoms recover." He paused. "Eryndor doesn't need to be what it is now. Hidden. Defended. Built around a barrier because the world outside it isn't safe."
I looked at him.
"Eryndor is what it is because I built it that way." I said. "Not because the world outside it required it."
He held my gaze.
"Move." I said. "We need to be out of the capital before the portal compensates."
He moved.
I followed him back into the passage.
Behind us the portal pulsed at its reduced output, the mana loop with Medalline broken, the demon lord's carefully constructed reinforcement system running at half the power it had been running at an hour ago.
He would know by morning.
He would know something had been in the Winterly nexus chamber.
He would not know what.
Not yet.