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They say you don’t notice the sky until something in it breaks. You used to think that was poetic nonsense—something people said to make loss sound pretty.
Then you met Castiel. And now you know better.
—
It starts with a tremor. Not in the ground—but in the air. Like the world itself is holding its breath and failing. You feel it before you see him. A pressure behind your ribs. A sharp, aching pull that doesn’t belong to you.
“Cas?” you call, stepping out onto the bunker’s war room floor.
The lights flicker. Once. Twice. And then he’s standing there. But not the way he usually is. Not in a quiet flutter of wings you can’t see. Not in that awkward, still way he stands like he’s trying to remember how to be human.
No. This is wrong. Castiel is on his knees. And angels— Angels don’t fall like that.
“Hey—hey, what—what happened?” You’re beside him instantly, hands hovering before finally settling on his shoulders. He’s trembling.
He’s never trembling. “They’re—” His voice falters, something frayed and breaking at the edges. “They’re falling.”
A cold spike of fear lances through you. “What do you mean, falling?”
His eyes lift to yours. Blue, but not steady. Blue, but flickering—like a dying star. “Angels,” he breathes. “Heaven… it’s collapsing. I can hear them. All of them.”
And then you hear it too. Not voices. Not exactly. But something… screaming, far away. Like echoes crashing down from a place too high to understand.
Your grip tightens. “Okay. Okay, we’ll fix it. We always fix it—right?” You don’t even know what it is. But that’s never stopped you before.
Castiel’s gaze softens. And that’s worse than panic. Because it looks like acceptance. “No,” he says quietly.
“No?” Your voice cracks. “Cas, don’t—don’t do that. Don’t you dare just—decide that.”
“I’m not deciding,” he murmurs. “I’m telling you the truth.”
The bunker shudders. Dust rains from the ceiling. Somewhere, glass shatters. And outside—And as the pair of you run outside, the sky changes. You don’t notice it at first. Not fully. Just a strange brightness spilling through the windows. Too white. Too sharp.
Until Castiel reaches up and brushes his fingers against your cheek. “Look,” he whispers.
You don’t want to. God, you really don’t. But you turn anyway. And your breath leaves you. The sky is falling. Not clouds. Not rain. Stars. Burning streaks of white-hot light tearing across the heavens, crashing downward like something holy has been ripped apart.
Like something alive is dying.
Your stomach drops. “Those are—”
“Angels,” Castiel confirms.
Each one a life. Each one a loss. Each one a piece of him.
You turn back to him, panic surging. “We can’t just stand here! There has to be something—some spell, some way—”
“There isn’t.” His hand slides from your cheek to your wrist, holding on like you’re the only solid thing left in the world.
“Cas—”
“I’m one of them.”
The words hit harder than anything else. “No,” you snap immediately. “No, you’re not falling. You’re here. You’re—”
“I can feel it,” he interrupts softly. “Whatever is happening… it’s taking us all.”
Your heart starts pounding, fast and uneven. “Then we fight it.”
A faint, sad smile touches his lips. “You always say that.”
“Because it’s what we do.”
“Even when you can’t win?”
“Especially then.”
That makes him pause. Really pause. And for a second—just a second—you think you’ve reached him. But then another tremor hits. Harder.
Castiel’s grip tightens painfully around your wrist, a sharp inhale tearing from him as something unseen drags at him.
“Cas!” You drop to your knees fully now, clutching him. “Stay with me—stay here—”
“I’m trying.”
And you believe him. That’s the worst part. You can see it—feel it—in the way he leans into you, like gravity itself is pulling him away and you’re the only thing keeping him grounded. Your hands frame his face, forcing him to look at you. “You listen to me,” you say, voice shaking but fierce. “You don’t get to leave. Not like this. Not without—”
Emotion chokes you off. Not without what? A goodbye? A confession? Something you’ve both been too afraid to say out loud?
Castiel watches you, something deep and aching flickering in his gaze. “I have always loved humanity,” he says quietly.
You shake your head. “Cas—”
“But you,” he continues, voice softening in a way that feels too intimate, too final, “you were my reason to stay.”
Your breath stutters. “No,” you whisper. “No, don’t—don’t make this sound like—” Like the end.
Another streak of light rips across the sky outside. Closer. Brighter. Castiel’s form flickers. Just for a second—but you see it. The outline of something vast and terrible and beautiful beneath his skin. Wings. Breaking.
“Cas!” You grab him tighter, desperate now. “Hold on—please—just—one more minute—”
His hand finds yours. Intertwines your fingers. Steady. Warm. “I’m here,” he says. “For now.”
Tears spill freely down your face. “That’s not enough.”
“I know.”
The bunker groans again, louder this time, like it might split in half.
You watch another star falls. Then another. Then dozens. The sky is coming apart. And so is he.
Your forehead presses against his, shaking. “I’m not ready,” you admit, voice barely there.
Castiel exhales softly, something almost human in the sound. “Neither was I,” he says.
Your grip tightens, like you can anchor him through sheer force of will. “Then stay.”
For a moment— A fragile, impossible moment— It feels like he might. Like the world might pause. Like the fall might stop. Like you might win this one. But then his hand slips. Just slightly. Just enough.
His glow flickers again, brighter this time, bleeding through his eyes, his skin—too much, too fast.
You panic. “Cas—!”
“I’m sorry.” The words are soft. Final.
“No—NO—!”
And then, Light. Blinding. Consuming. Gone in a heartbeat. The weight in your hands disappears. The air around you stills. The trembling stops. The stars keep falling.
—
You don’t look at the sky anymore. Because now you know — sometimes, when stars fall… They don’t come back.