Hogwarts felt different at night.
Harry had walked these corridors after dark a hundred times – under Invisibility Cloaks, through secret passages, running from Filch or Snape or worse. But this time, the castle itself seemed to be watching him. The portraits were empty. The suits of armour turned their heads as he passed. Even the torches burned lower, as if conserving their light for something important.
Draco walked beside him, their steps perfectly synchronized. Neither had planned it. The black threads on their wrists simply pulled them into rhythm, like two horses harnessed to the same cart.
"The password is in Parseltongue," Hermione had told them before they left. "But not just any Parseltongue. The Founders' combined magic requires two speakers. One for the first half of the word. One for the second. If you say it alone, the door stays closed forever."
Harry stopped in front of a blank stone wall on the fourth floor. To anyone else, it looked like any other wall. But Harry could feel warmth radiating from it – the same warmth he had felt in Dumbledore's office, in the Room of Requirement, in the Chamber of Secrets. Old magic. Deep magic.
"What's the word?" Draco asked.
"The first half is 'Unity,'" Harry said. "In Parseltongue, that's 'Ssseth-ka.' The second half is 'Forgiveness.' That's 'Nathair-ohn.'"
Draco raised an eyebrow. "You expect me to speak Parseltongue? I'm not a Parselmouth."
"You don't need to be," Harry said. "The Founders' magic doesn't care about your blood. It cares about your intention. Just say the word. Mean it."
Draco took a deep breath. They pressed their palms against the wall – Harry's left, Draco's right. The black threads on their wrists touched the stone.
"Ssseth-ka," Harry hissed.
"Nathair-ohn," Draco said. His voice was not a hiss. It was just English. But the wall heard him anyway.
The stone parted like water.
Behind it was a room that had no business existing inside Hogwarts. It was round, like the top of a tower, but they hadn't climbed any stairs. The ceiling was a living map of the stars – but not the stars Harry knew. These stars moved in patterns he didn't recognize. Constellations that had faded from Earth millennia ago.
In the center of the room stood four chairs. Not thrones – chairs. Simple, wooden, worn smooth by centuries of use. And in each chair sat a ghost.
Godric Gryffindor.
Helga Hufflepuff.
Rowena Ravenclaw.
Salazar Slytherin.
Harry had seen portraits of the Founders before. But portraits were copies. These were the real thing – the actual ghosts of the four greatest witches and wizards of their age. They had waited here for a thousand years.
Gryffindor spoke first. His voice was like a lion's roar softened by age. "A Potter and a Malfoy. In my day, your families would have killed each other."
"They tried," Draco said quietly. "For six years."
Hufflepuff smiled warmly. Her round face was kind, but her eyes were sharp. "And yet here you stand together. Shoulder to shoulder. Wrists bound by shadow. Explain."
Harry stepped forward. "The Shadow Weaver tried to take Draco as a vessel. I stopped him by taking the shadow into myself. It divided between us. Now we share a curse – and a soul."
Ravenclaw tilted her head. Her silver hair floated around her like mist. "A shared soul has not occurred since we four walked the earth. And even we never achieved it. How did two children succeed where we failed?"
"Because we didn't try," Draco said. "It just… happened. Harry offered himself for me. I offered myself for him. Neither of us wanted to be bound. But neither of us wanted the other to die alone."
Slytherin laughed. It was a cold sound, but not cruel. Tired. "Love. The answer is always love. I should have learned that while I lived. Instead, I built a Chamber and filled it with a monster."
"You did terrible things, Salazar," Gryffindor said. "But you also built this school. We all did. And we built it for children like these – children who would one day learn to trust each other across old hatreds."
Hufflepuff stood up from her chair. "You seek the Founders' combined magic. You want to stop Yaxley from merging with the Veil. But the magic we left behind is not a weapon. It is a test."
"What kind of test?" Harry asked.
"The test of unity," Ravenclaw said. "We four did not agree on much. Godric believed in bravery above all. Helga believed in kindness. I believed in wisdom. Salazar believed in purity. We fought constantly. But when it came to protecting this school, we always stood together. That is the magic you need – not agreement, but alliance despite disagreement."
Slytherin rose from his chair. "You will face three trials. Each trial will try to tear you apart. It will show you visions of betrayal. It will whisper lies in your ears. It will make you doubt each other. If you pass all three, the Founders' magic is yours. If you fail – you will be trapped here forever, just as we are."
Draco swallowed. "No pressure."
---
Trial One: The Mirror of Trust
The floor beneath them vanished.
Harry and Draco fell into a chamber of mirrors – endless reflections of themselves, stretching in every direction. But the mirrors did not show what was real. They showed what could be.
In one mirror, Harry saw himself stabbing Draco in the back. The Draco in the mirror screamed and fell, and Harry's reflection laughed.
In another mirror, Draco saw himself handing Harry over to Yaxley. Harry's reflection was begging. Draco's reflection turned away.
"These are not real," Harry said loudly.
"No," agreed a voice. It was Gryffindor's, echoing from everywhere and nowhere. "But they are possibilities. The question is: do you trust each other enough to ignore them?"
Harry looked at Draco. Draco looked at Harry.
"Remember the tree," Draco said. "The silver desert. We dreamed together. That wasn't fake."
Harry nodded. "Show us the way out. Together."
They walked forward, side by side, refusing to look at the mirrors. The reflections screamed. They whispered. They showed Harry his parents dying again, this time with Draco laughing beside Voldemort. They showed Draco his mother being tortured, with Harry holding the wand.
They kept walking.
The mirrors shattered.
---
Trial Two: The River of Memory
They stood on the banks of a black river. The water was made of memory – not theirs, but everyone's. Every regret. Every betrayal. Every word spoken in anger.
"You must cross," said Ravenclaw's voice. "But the river will try to drown you in your worst moments. You cannot cross alone. You must carry each other."
Harry stepped into the water. It rose to his knees. Immediately, he was flooded with memories – not of his own failures, but of Draco's. He felt what Draco felt when he watched his father abuse his mother. He felt the shame of taking the Dark Mark. He felt the terror of being unable to kill Dumbledore.
Draco, wading beside him, was drowning in Harry's memories. The cupboard. The Dursleys' fists. The loneliness of being the Boy Who Lived but never the Boy Who Was Loved.
They reached for each other.
In the middle of the river, they held onto each other like drowning men. And because they held on, the river could not take them.
They reached the far shore together.
---
Trial Three: The Empty Chair
The final chamber was simple. One table. Two chairs. And between them, a single black stone.
"This is the Stone of Accord," said Hufflepuff's voice. "Only two people who truly forgive each other can lift it together. Not forget. Not pretend. Forgive. Truly. Completely."
Harry looked at Draco. Draco's grey eyes were wet.
"I forgave you a long time ago," Harry said. "In the Room of Requirement. When you didn't tell the Carrows it was me. When you dropped your wand. You were already forgiven, Draco. You just didn't know it."
Draco's voice cracked. "I never forgave myself."
"Then do it now," Harry said. "Not for me. For you."
Draco closed his eyes. Tears fell down his cheeks. He thought of every cruel word he had ever said. Every choice he had made out of fear. Every moment he had hidden behind his father's name.
"I forgive myself," Draco whispered.
He opened his eyes.
Together, they reached for the black stone. Their hands touched it at the same moment. The stone lifted – weightless. And from it poured golden light.
The Founders' magic flooded into their black threads, turning them from shadow to light. The threads did not disappear. They became something new – silver and gold, intertwined, like a promise.
"You are ready," said Slytherin's voice – and for the first time, he sounded almost proud.
---
They emerged from the First Staff Room as dawn broke over Hogwarts.