The night sky cracked like glass.
Eren Kalu had been staring at the stars—the same stars he'd stared at every night since he was old enough to climb the ladder to his mother's bookstore roof. He knew their patterns. Their rhythms. The way they blinked in the cold Harmattan air like old friends winking at him from across an impossible distance.
Then the sky broke.
Not metaphorically. Not poetically. The sky split open like a wound, a jagged line of white light that carved across the heavens with the sound of a thousand windows shattering at once. Eren's physics textbook slid off his lap. He didn't notice. His eyes were fixed on the impossible thing above him, his brain refusing to process what his eyes were seeing.
This isn't real. This isn't—
The crack deepened. The moon—his mother's favorite moon, the one she called "the laughing moon" because it always seemed to smile—split into two uneven halves. Light bled from the wound, not moonlight but something else, something that made Eren's stomach lurch and his vision swim.
Ba-dum.
His chest tightened. His heart was beating too fast, but that wasn't it. There was another heartbeat. A second rhythm, deeper and older, pulsing somewhere behind his ribs like a drum from the bottom of the ocean.
Ba-dum.
The sound was wrong. It didn't echo. It reverberated, shaking his bones, making his teeth ache. Eren clutched his chest, his breath coming in short, sharp gasps. The air around him grew heavy. Thick. Like drowning without water.
Ba-dum.
The third beat was louder. Closer. And this time, Eren felt it in his arm.
His right arm.
He looked down and stopped breathing.
Violet lines were crawling across his skin like living roots, tracing patterns that burned with cold fire. They spiraled from his wrist to his elbow, forming symbols that his eyes couldn't quite focus on, shapes that made his brain hurt just trying to comprehend them. The markings pulsed. Glowed. Breathed.
"No," he whispered. "No, no, no—"
He scrambled backward, his sneakers slipping on the roof tiles, his hands scrabbling for purchase. The textbook tumbled over the edge, pages fluttering into the darkness below. He didn't care. He was too busy trying to escape his own skin.
Ba-dum.
The sound was everywhere now. In his ears. In his teeth. In the marrow of his bones. The violet markings blazed brighter, and Eren could have sworn he heard something in the distance—a whisper, a voice, a call from somewhere beyond.
"Eren."
His blood went cold.
The voice was familiar. Not because he'd heard it before, but because it sounded like him. Like his own thoughts, his own voice, twisted and stretched and filled with something ancient.
"Eren. You hear me."
"No," he said again, his voice cracking. "I don't. I don't hear anything. This isn't happening. This isn't—"
"You hear me, Eren."
The certainty in the voice made him want to scream.
Below, the city of Olori erupted.
Screams. They started as distant ripples, but they spread fast, climbing from the marketplace to the residential streets, up the hills where the rich lived and down into the neighborhoods where people like his mother struggled to pay rent. Cars screeched to a halt. Sirens wailed. Somewhere, a child was crying for their mother.
Eren forced himself to look over the edge of the roof.
What he saw stole the air from his lungs.
The streets were burning. Not with fire—with light. Shards of white-hot energy rained from the rift above, each one striking the ground with a sound like a bomb going off. They carved craters into the asphalt. They ripped through buildings like paper. And where they touched, shadows moved.
No. That wasn't right.
The shadows weren't moving. They were unmoving—stretching, twisting, reaching for the light like hungry hands. Eren watched a shard of that impossible light fall near the marketplace, watched the shadows there surge upward to meet it, and then—
Something emerged.
It rose from the crater like smoke given form. Blacker than black, darker than the space between stars. It had no face, no features, nothing Eren could name. But it had presence, a weight that pressed down on the city like a god's thumb. Its body flickered and wavered, as if it was stitched together from nightmare, and where its head should have been, two spirals of endless void stared out at nothing.
The creature turned.
And it looked directly at Eren.
His heart stopped. His lungs refused to work. He was frozen, pinned to the rooftop by those bottomless spirals, and he couldn't breathe, couldn't move, couldn't do anything but watch the darkness come for him.
"Voidwalker."
The voice in his head wasn't a whisper anymore. It was a ROAR.
"AWAKEN."
The markings on Eren's arm exploded. Violet fire erupted from his skin, searing his sleeve, and he screamed—not from pain, not quite, but from something worse. Something that felt like his soul was being unspooled, unwound, remade into something he didn't recognize.
His body moved without his permission.
He was on his feet now, standing at the edge of the rooftop, and the night wind was whipping around him, tearing at his clothes, and the creature below was looking at him, and Eren was screaming, he was screaming so loud his throat burned, but no sound came out because the roar in his head was drowning everything else.
"Awaken. Or be consumed."
The shadows reached for him.
They came up from the street like a tidal wave, thousands of black hands stretching toward the roof, reaching for Eren with hungry fingers. He wanted to run. He wanted to hide. He wanted to wake up from this nightmare and find his mother making breakfast downstairs, telling him he was late for school again.
But the shadows kept coming.
And Eren did the only thing he could do.
He screamed and threw his arm forward.
The violet markings blazed so bright they burned through his sleeve, and from his palm erupted something that wasn't light and wasn't dark—a sphere of pure absence, a hole in reality that swallowed the shadows whole. The creature below screeched, a sound like grinding metal, and half its form vanished into nothing.
Then Eren collapsed.
His body hit the roof tiles with a crack, and his vision swam, and his ears rang, and he thought, This is it. I'm dying. I'm dying on my mother's roof and she doesn't even know.
He heard footsteps on the tiles.
No. Not footsteps. Something lighter. Something that landed like a feather.
Eren forced his eyes open.
Standing above him was a girl.
She looked his age—seventeen, maybe eighteen. Her hair was silver, so pale it almost glowed in the fractured light of the broken sky. Her eyes were sharp, focused, the color of starlight held in amber. In her hand, she held a sword that shimmered with the light of a thousand galaxies, thin and elegant and impossibly bright.
The shadows that reached for her—they didn't touch her. They couldn't. The light of her blade pushed them back, scattered them like dust in a storm.
She crouched beside Eren, her eyes scanning his face, his arm, the fading violet markings that still smoked on his skin.
"You," she said.
Her voice was soft. Tired. As if she'd been running for a very long time.
"You're the last Voidwalker."
Eren tried to speak. What came out was a hoarse croak. "I don't... I don't understand... I'm just..."
"You're just a boy," she finished for him. She said it without cruelty, without pity. Just a fact. "And you're the most dangerous person in this city right now."
The creature below roared again.
The girl stood. Her blade hummed with that impossible light, and she looked down at Eren with those starlight eyes, and for just a moment, her expression cracked open to reveal something that looked almost like fear.
"Stay behind me," she said. "And don't die. We have a lot to talk about."
She jumped.
Eren watched her plummet toward the creature, her silver hair streaming behind her like a banner, her sword blazing like a star falling from heaven. She landed on the creature's back with impossible grace, and the light of her blade exploded outward, illuminating the city in silver and white and gold.
And Eren lay there on his mother's roof, his arm still smoking, his heart still pounding, and thought:
This is real.
This is actually real.
And I don't know if I'm going to survive the night.
The girl—Lyra, she'd said her name was, though Eren barely heard it through the ringing in his ears—returned to the rooftop fifteen minutes later. The creature below was gone, scattered into ash and shadow by the light of her sword. The rift above remained, a jagged scar across the sky, but it was smaller now. Healing. Like a wound closing.
The screaming in the city had died down to a low, terrified murmur.
Lyra knelt beside Eren where he still lay sprawled on the roof tiles, his arm aching, his body trembling, his mind still refusing to accept everything that had happened.
"You're still here," she said. "Good."
Eren laughed. It was a broken sound, halfway to a sob. "Good? You—you just—I saw—I don't—"
"Breathe," she said. "You're hyperventilating. Slow breaths. In through your nose, out through your mouth."
"I don't want to breathe!" He was shouting now, and he couldn't stop. "I want to wake up! I want to go back to—to before, when the sky wasn't—when I wasn't—" He held up his arm. The violet markings were gone, faded to nothing, but he could still feel them. Still feel the wrongness of them under his skin. "What is this? What am I?"
Lyra was quiet for a long moment.
When she spoke, her voice was softer.
"You're a Voidwalker," she said. "The last one. The only one. The Rift chose you—for reasons I don't know, and probably don't want to know. And now you're bound to it."
"Bound," Eren repeated. The word tasted bitter on his tongue. "Like... like a chain?"
"Like a thread," she corrected. "A connection. You feel it, don't you? The hum in your chest? The whisper in your thoughts?"
Eren didn't answer.
He didn't have to.
Lyra nodded, as if she'd expected the silence. "That's the Void. It speaks to you now. It will always speak to you. And if you're not careful—" She paused. Her eyes, those starlight eyes, held something that looked almost like grief. "—it will speak so loudly that you forget who you were before you heard it."
Eren felt his throat tighten.
"Can you..." He swallowed. "Can you take it back? Make it stop?"
Lyra's expression flickered. Pain, maybe. Or pity. "No."
"I don't want this."
"I know."
"I didn't ask for this."
"I know."
"It's not fair."
Lyra looked up at the broken sky. The rift pulsed faintly, a heartbeat of its own, and Eren realized with a chill that it was beating in time with his chest.
"No," she said quietly. "It's not."
The night air was cold. Eren shivered, and Lyra pulled off her cloak—a worn thing, patched in places, but warm—and draped it over his shoulders. He let her. He didn't have the strength to refuse.
"I'm Lyra," she said. "Lyra Asterion. Sentinel of the Astral Order. And as of tonight, I'm your trainer."
Eren blinked. "My... trainer?"
"You have power now," she said. "Untamed, uncontrolled, dangerous power. If you don't learn to control it, you'll die. And everyone around you will die with you." She paused. "That's not a threat. That's a fact."
Eren stared at her.
He thought about his mother. His mother, who was probably downstairs right now, hiding in the bookstore basement, praying that her son was safe. He thought about the creature below, the shadows, the way the darkness had reached for him.
He thought about the heartbeat in his chest that wasn't his own.
"Train me," he said.
His voice was steadier than he felt.
"I don't understand what's happening. I don't know what I am. But I know I don't want to hurt anyone. So... train me. Please."
Lyra studied him for a long moment.
Then, slowly, she nodded.
"Alright," she said. "But I'm warning you, Eren Kalu. Once you start down this path, there's no going back. The Void won't let you leave. It will follow you, whisper to you, tempt you, until the day you die. Are you prepared for that?"
Eren thought about the heartbeat in his chest. The voice in his head. The markings on his arm.
"No," he admitted.
And then, because he was tired, because he was scared, because he was seventeen years old and his world had just shattered:
"But I don't have a choice, do I?"
Lyra's expression softened.
"No," she said. "I suppose you don't."
They sat on the rooftop until dawn.
The rift above slowly sealed itself, leaving behind a scar of darker sky that would fade with time. The city below was quiet, broken, afraid. Eren watched the sun rise over Olori—the same sun he'd seen a thousand times before, the same orange and gold and red—and it didn't feel real.
None of it felt real.
"You're going to be tired," Lyra said, breaking the silence. "The Void energy takes a toll on your body. You'll need to eat, to sleep, to recover. We can start training tomorrow."
"Tomorrow?" Eren said. "Shouldn't we start now? If there are more of those... things..."
"Creatures," Lyra supplied. "Riftspawn. And yes, there will be more. But you won't be able to fight them if you collapse from exhaustion. Rest is part of the training."
Eren wanted to argue. He wanted to say I don't have time to rest, people are dying, the sky is broken, nothing makes sense.
But he was so, so tired.
"Alright," he said. "Tomorrow."
Lyra stood. "There's a safehouse nearby. I'll take you there. You can sleep, and when you wake up, we'll begin."
Eren struggled to his feet. His legs felt like they were made of jelly. His head was pounding. His arm ached in a way that felt deep, bone-deep, like the markings had left their marks on his soul as well as his skin.
As they walked toward the edge of the roof, Eren stopped.
"My mother," he said. "She's downstairs. I have to tell her I'm okay, I have to—"
"Eren."
Lyra's voice was gentle, but firm.
"The things you'll be involved in from now on—you can't drag your mother into them. It's too dangerous. For both of you."
Eren's chest tightened. "So I just... leave her? Without a word?"
"For now." Lyra's eyes were unreadable. "You'll be able to see her again. But not tonight. Not until you know how to control your power."
Eren wanted to scream. He wanted to go downstairs, wrap his mother in a hug, tell her everything would be okay even though he knew it wouldn't be.
Instead, he nodded.
"Alright," he said. "Alright."
He let Lyra lead him off the roof, through the back streets of Olori, past the smoke and the damage and the people crying in the streets. He didn't look back at the bookstore.
He didn't think he could bear it if he did.
The safehouse was a small apartment in an old building, hidden behind a false wall and a password-locked door. It had a bed, a kitchen, a bathroom, and a window that faced the rift.
Eren sat on the edge of the bed and stared at the scar in the sky.
"I don't understand," he said. "Why me? I'm not special. I'm not brave. I'm just... me."
Lyra leaned against the wall, her arms crossed.
"Those are two different questions," she said. "Why you? I don't know. Maybe the Void chose you because you're ordinary. Maybe that's exactly what it needed." She paused. "As for whether you're brave... you stayed on the roof when the shadows reached for you. You didn't run. You fought back. That counts for something."
"I was scared," Eren said quietly. "I was so scared I couldn't breathe."
"Fear isn't the opposite of courage," Lyra said. "Fear is what makes courage possible."
Eren looked at her. Really looked at her—the exhaustion in her eyes, the weariness in her shoulders, the way she held herself like she was carrying a weight too heavy to bear.
"You're tired too," he said.
Lyra almost smiled. "I've been tired for years, Eren. The burden of a Sentinel is not a light one."
"Why do you do it?" he asked. "If it's so hard, why keep fighting?"
She was quiet for a moment.
"Because someone has to," she said finally. "Because if I stop, if I give up, the Rift wins. And I refuse to let that happen."
Eren thought about that.
"Will it get easier?" he asked. "Will I stop being scared?"
"No," Lyra said. "But you'll get used to it. And eventually, you'll learn to act anyway."
Eren lay back on the bed. The ceiling was cracked, peeling in spots. He watched the shadows dance across it as the light outside shifted and the sun climbed higher.
"Lyra?"
"Yes?"
"Thank you. For helping me. For not leaving me."
Lyra was quiet for a long moment.
"You don't have to thank me," she said. "I'm just doing what I was chosen to do."
Eren closed his eyes.
The heartbeat in his chest hummed softly, faintly, like a distant lullaby.
And for the first time since the sky broke, he didn't feel quite so alone.
End of Chapter One