Floor 10 stretched forever.

Red sand, fine as powdered rust, covered everything in every direction. The sky — if it could be called a sky — was liquid silver, shifting and rippling like a lake turned upside down. No sun. No clouds. Just that mercury ceiling, casting shadowless light that made distances impossible to judge.

They walked for hours before anyone spoke.

Pike led, her spear planting into the sand with each step, leaving tracks that the wind erased within minutes. Mora flanked left, daggers loose in their sheaths. Reed covered the rear, crossbow on his shoulder, eyes scanning the featureless horizon for threats that hadn't appeared yet.

Kael walked beside Sera in the middle of the formation.

"The deep floors are different," Sera said quietly. "Surface floors have themes — water, mirrors, darkness. Deep floors have *presence*. The Tower doesn't just build a challenge. It watches you experience it."

"I can feel it," Kael said. And he could. The Whispers were gone — replaced by something more pervasive. Not a voice. A *gaze*. The feeling of being observed from every grain of sand, every ripple in the silver sky. The Tower wasn't speaking. It was studying.

"That's the identity testing Pike mentioned," Sera continued. "Surface floors ask 'Can you survive?' Deep floors ask 'Who are you?' And if the answer isn't clear enough —"

"— the floor doesn't end."

"Sera's been before," Pike called back without turning. "Listen to her."

---

They found the first anomaly at what might have been hour four — though time was meaningless under the mercury sky.

A village. Small — a dozen buildings, crudely built from red sandstone, arranged in a loose circle around a well. Smoke rose from three chimneys. Laundry hung on lines between rooftops. A child's toy — a wooden horse — lay abandoned near the well.

Not Thornfield. Kael didn't recognize it.

Mora did.

She stopped walking. Her face — normally controlled, blank, the disciplined mask of a young woman who'd learned to hide her reactions — cracked. The daggers in her hands trembled.

"That's Millhaven," she whispered. "That's my village."

"Don't go in," Pike said immediately. "It's a construct. The floor is targeting you first."

"My mother hung laundry like that. Left to right. She always started with the sheets." Mora's voice was thin, stretched, close to breaking. "The toy horse — I made that for my brother. Before I left."

"Mora." Pike turned, planted her spear, met the girl's eyes with an authority born from six years of watching climbers die. "You go in there, the floor will eat you alive. It will show you everything you lost and ask you to stay. And if you stay — you never leave."

"I know." Mora's jaw clenched. Steel returned to her eyes — not much, but enough. "I know."

They walked past Millhaven. Mora didn't look back. But Kael saw her hands shaking for the next hour, and he understood.

---

The floor targeted them individually.

After Mora's village, they found Sera's test: a corridor of ice — white, freezing, carved with symbols she recognized. A fragment of Floor 15, she said. The ceiling where she'd fought alone for three days. She walked through without stopping, but her breathing changed — faster, shallower, the rhythm of someone reliving trauma in real time.

Reed's came next: a room filled with bodies. Not real — constructs, like Thornfield's echoes. But they wore faces he knew. His climbing party — the one he'd abandoned on Floor 8 when the Warden attacked. He'd run. They'd died.

"Don't—" Pike started.

"I'm fine." Reed's voice was flat. He wasn't. But he kept walking.

Pike's test was a door. Just a door — wooden, old, hanging in the middle of the desert with no walls around it. On the other side — Kael couldn't see what Pike saw. But she stood before it for two full minutes, her knuckles white on her spear, and then she turned away.

"What was behind it?" Sera asked.

"Floor 19. The room where I lost them." Pike didn't elaborate.

---

Kael's test was different.

It came as sound. Not a village, not a room, not a door. A *voice*. His own voice — but older, deeper, speaking from somewhere inside the red sand.

*"You will reach the Heart. You will see what she saw. And you will make the same choice."*

"What choice?"

*"To leave. To walk away. To take your Shards and your knowledge and return to the surface and live a quiet life. Your mother chose that. It cost her everything."*

"I don't understand."

*"You will."*

The voice faded. The sand shifted — not violently, just a gentle rearrangement, like someone adjusting pillows. And in the shifted sand: a Shard. Small, clear, pulsing with a light that was neither warm nor cold.

*"Take it,"* Ghost said. *"It's a Memory Shard — pure, unfused. It holds nothing from the Tower. No grief, no fear. Just — memory. Raw, unprocessed."*

"Whose memory?"

*"Yours. The Tower is offering you yourself — your earliest memories, the ones you've forgotten. Before Thornfield. Before Maren. Before you were anything."*

Kael knelt. Picked up the Shard. It felt like holding water — cool, formless, shifting.

Memories came. Fragments — a woman's hands wrapping him in cloth (his mother's hands, calloused, warm). A humming voice (his mother's melody, the one Ghost echoed). A feeling of warmth and safety so complete it made his chest ache because he couldn't remember the last time he'd felt it.

And underneath the warmth — a single image: a door. A Tower door. His mother carrying him through it — out, into sunlight, away. She was crying. Her Shards glowed beneath her shirt.

She'd carried him out of the Tower when he was an infant.

"I was born in the Tower," Kael said.

Everyone stopped.

"What?" Sera's voice was sharp.

"She carried me through the Tower. The memory — I'm a baby. She's holding me. We're going out through a door that opens onto grass and sky. She was climbing while pregnant. She gave birth inside the Tower. And then she left."

*"Yes,"* Ghost said. *"That's why the Tower considers you its own. You were born inside its body. Your first breath was Tower air. Your first sound was the Whispers."*

"That's why you can hear them," Sera said, understanding dawning on her face. "Not because of the Shards. Because of where you were born."

"Ashborn," Pike said. "I always thought it was a title. It's a description."

---

The red desert ended without warning — the sand simply stopped, replaced by smooth stone, and the mercury sky compressed into a normal ceiling thirty feet above. A corridor. Stairs. The entrance to Floor 11.

They rested. Ate. Didn't talk much.

Kael turned the Memory Shard over in his hands. It didn't need forging — it was already whole, already his. He pressed it against his chest and it sank in without resistance, finding its place among the others like a key returning to its keyhole.

Five Shards. Two forged, one Shard-seed, one unmerged, one Memory Shard.

And a new understanding: he wasn't just climbing the Tower. He was coming home.

Whether that was beautiful or terrifying — he couldn't decide.