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Fandom: Ateez - alternative universe
Created: 3/17/2026
Tags
AU (Alternate Universe)DramaAngstHurt/ComfortScience FictionPost-ApocalypticDystopiaSurvivalCharacter StudyPsychologicalIsekai / Portal FantasyCurtainfic / Domestic StoryTragedyBody Horror
The Fragile Architecture of Home
The sun didn't rise in this world so much as it bruised the sky, a sickly shade of violet-grey that bled through the thin, yellowed curtains of their cramped apartment. Seonghwa was already awake. In truth, he wasn't sure if he had ever truly fallen asleep. He spent his nights suspended in a state of hyper-vigilance, his ears tuned to the rhythmic, wet sounds of Hongjoong retching in the bathroom and the low, jagged whimpers that escaped Wooyoung’s throat even in his dreams.
He sat up on his makeshift pallet on the floor, his joints popping. The air in the room felt heavy, charged with a static electricity that didn't belong to their home universe. It made the hair on his arms stand up and his heart hammer a frantic rhythm against his ribs.
"Deep breaths," Seonghwa whispered to himself, his voice a dry rasp. "One thing at a time."
He stood up and navigated the minefield of their meager belongings. The apartment was small—two rooms and a kitchenette that smelled of bleach and copper—but it was a fortress against the strange, cold streets outside.
His first stop was the bathroom. He found Hongjoong slumped against the porcelain pedestal of the sink, his forehead resting on the cool ceramic. He looked skeletal, the sharp lines of his jaw emphasized by the pallor of his skin.
"Joongie," Seonghwa murmured, kneeling beside him. He dipped a washcloth into a basin of lukewarm water and gently wiped the sweat from the back of the leader’s neck.
Hongjoong didn't open his eyes. "I think... I think I managed to keep the water down for ten minutes today," he rasped. His voice was a ghost of the commanding tone that used to lead them onto world-class stages. "That’s a record."
"That’s progress," Seonghwa lied softly, his heart breaking. He helped Hongjoong sit up, supporting his weight. "Do you want to try to move to the bed?"
"Not yet," Hongjoong said, his hand clutching the rim of the sink until his knuckles turned white. "The room is still spinning. I need to keep thinking, Hwa. I’ve been trying to map the fluctuations in the air. If I can just find the frequency of the rift we fell through..."
He trailed off, his stomach heaving again. Seonghwa held his hair back, rubbing steady circles into his spine. It was a cruel irony; the man with the most brilliant mind, the one most capable of finding their way home, was being physically dismantled by the very atmosphere of this dimension.
"Focus on breathing for now," Seonghwa encouraged. "The math can wait until breakfast."
Breakfast was a grim affair. Seonghwa spent an hour preparing a soft porridge, trying to mask the metallic tang that seemed to permeate all food in this world. He moved to the second room, where Yunho and Wooyoung were.
Yunho was sitting by the window, staring out at the distorted skyline. His large frame was hunched, and his dark hair was messy. When Seonghwa entered, Yunho didn't turn around. He was tracing patterns on the dusty glass with a long, elegant finger.
"Yunho-yah, time to eat," Seonghwa said, forced cheerfulness lacing his tone.
Yunho turned, his expression blank and glassy. For a moment, there was no recognition in his eyes, just a vast, terrifying emptiness. Then, a small spark flickered. "Seonghwa? Is it... is it time for practice? I can’t find my shoes."
Seonghwa felt a physical pang in his chest. He set the bowls down on a crate and walked over to take Yunho’s hands. They were cold. "No practice today, Yunho. We’re just staying in. Remember? We’re on a long vacation."
"Vacation," Yunho repeated the word as if it were a foreign language. He looked down at his hands. "I feel like I’m made of smoke. Like if the wind blows too hard, I’ll just... scatter."
"I’m holding onto you," Seonghwa promised, squeezing his fingers. "I won't let you scatter."
A sharp, guttural cry cut through the quiet of the room. On the bed, Wooyoung’s body suddenly arched, his muscles seizing with such force it looked like his bones might snap. He let out a strangled scream, his eyes flying open, though they saw nothing but the agony radiating through his nerves.
Seonghwa was at his side in a second. "I’m here, Wooyoung, I’m here!"
He grabbed the heavy weighted blanket they had fashioned out of old coats and pressed it down over Wooyoung’s trembling limbs. This was the "spiking" period. The doctors in their world would have called it a neurological storm; here, it was just the price of existing in a body that didn't match the physics of the realm.
"Make it stop," Wooyoung sobbed, his voice cracking. "Hwa, please, it feels like there’s glass in my blood. It’s burning, it’s burning!"
"Shhh, I know, I know," Seonghwa whispered, climbing onto the bed to pull Wooyoung into his lap, pinning his flailing arms to his chest to keep him from hurting himself. He rocked them back and forth, singing a low, wordless melody. It was an old song, something from their trainee days, a remnant of a life that felt like a fever dream.
Yunho watched them from the window, his head tilted. "Why is he crying?" he asked softly. "Did we lose the trophy?"
"No, Yunho," Seonghwa said through grit teeth, trying to keep his voice steady while Wooyoung’s fingernails dug into his forearms. "He’s just tired. Why don't you bring him some water?"
Giving Yunho a task helped. It tethered him to the present. Yunho moved slowly, with a strange, floating grace, and brought a cup over. He watched with a tilted head as Seonghwa helped a shaking Wooyoung take a sip once the worst of the spasm had passed.
By midday, the apartment was a portrait of quiet exhaustion. Hongjoong had migrated to the floor of the living area, surrounded by scraps of paper he’d found in the trash, covered in frantic, shaky equations. He was pale, a bowl always within reach, but his eyes were burning with a desperate, manic light.
"The gravity is wrong, Hwa," Hongjoong muttered, not looking up as Seonghwa wiped the floor around him. "The constant is 9.8 in Seoul. Here, it’s... it’s shifting. That’s why my inner ear won't settle. That’s why we’re falling apart. We’re being stretched."
"Don't stretch yourself too thin," Seonghwa cautioned, placing a hand on Hongjoong’s shoulder.
Hongjoong looked up, his eyes bloodshot. "If I don't find the exit, we’re going to die here. Wooyoung’s nervous system will shut down, and Yunho... Yunho will forget he ever existed. I have to do this."
Seonghwa didn't have an answer. He knew Hongjoong was right, which made the weight on his own shoulders feel like lead. He was the only one who functioned, the only one whose body seemed to have accepted the transition with nothing more than chronic anxiety and a permanent tremor in his hands. He was the caretaker of a dying kingdom.
In the afternoon, the "Grey" set in. It was a period where the light outside dimmed to a dull charcoal, and the temperature dropped sharply.
Wooyoung was drifting in and out of a medicated sleep—Seonghwa had found some local herbs that acted as a sedative, though they left Wooyoung dazed and sluggish. Yunho was sitting on the floor, sorting through a pile of buttons he had found, humming to himself.
Seonghwa sat at the small table, his head in his hands. The silence was worse than the screaming. In the silence, he could hear the ticking of a clock that wasn't there, the sound of their time running out. He felt a sudden, sharp wave of panic—a familiar foe. His breath hitched, and the walls seemed to lean inward.
"Hwa?"
He looked up. Yunho was standing over him. For a moment, the fog in Yunho’s eyes had cleared, replaced by a devastatingly familiar warmth.
"You're shaking," Yunho said quietly. He reached out and smoothed the hair back from Seonghwa’s forehead. "You're doing a good job. We're all still here because of you."
Seonghwa’s composure shattered. He leaned his forehead against Yunho’s stomach and let out a jagged sob. He cried for the stages they would never stand on again, for the fans who didn't know where they were, and for the brothers he was watching crumble.
Yunho just stood there, a solid pillar, stroking Seonghwa’s hair. "It's okay. I don't remember much, but I remember you. You're the one who fixes things."
"I can't fix this," Seonghwa choked out.
"Maybe not," Yunho whispered. "But you can hold us while we're broken."
The moment of clarity didn't last. Ten minutes later, Yunho was asking who the man on the bed was and why he looked so sad. But those ten minutes were enough to give Seonghwa the strength to stand back up.
As evening approached, the sky outside turned a bruised, electric blue. Seonghwa went about the evening rituals. He helped Hongjoong wash his face, ignoring the way the younger man’s ribs protruded. He changed the bandages on Wooyoung’s wrists where he’d bitten himself during a particularly bad spike.
He gathered them all in the main room. It was a tight fit, but they needed the proximity. Hongjoong sat propped up against the wall, his notebook in his lap. Wooyoung lay with his head in Seonghwa’s lap, his breathing shallow but rhythmic. Yunho sat at the foot of the bed, watching the shadows dance on the ceiling.
"Tell us a story, Hwa," Wooyoung whispered, his eyes half-closed. "Not about here. About... before."
Seonghwa cleared his throat, pushing down the lump of grief. "Before," he began, his voice soft and melodic, "there was a city that never slept. It smelled like rain and grilled meat. We lived in a house with too many clothes and a kitchen that was always messy."
"I remember the lights," Hongjoong added, his eyes distant. "Thousands of them. Like stars on the ground."
"And the music," Yunho said, a small smile playing on his lips. "It was so loud you could feel it in your bones. Not like the humming here. It was... happy."
Seonghwa continued, weaving a tapestry of memories—of late-night dance practices, of laughing until they couldn't breathe, of the feeling of a thousand voices screaming their names in unison. He spoke until Wooyoung’s body finally relaxed into a deep sleep, and Hongjoong’s head lulled against the wall.
Eventually, even Yunho drifted off, curled up like a child at the end of the bed.
Seonghwa stayed awake. He watched the strange, alien moon rise over the jagged horizon. His body ached, and his mind was a frayed wire, but he took his post. He adjusted the blankets, tucked a stray hair behind Hongjoong’s ear, and kept his hand on Wooyoung’s shoulder.
He was the anchor. As long as he stayed awake, as long as he kept their memories safe, they weren't lost yet.
"Tomorrow," he whispered into the dark, a prayer to a god that might not exist in this universe. "Tomorrow, we’ll find a way."
Outside, the wind howled with a sound like tearing metal, but inside the small, flickering circle of their lives, Seonghwa kept watch. He was anxious, he was heartbroken, and he was terrified—but he was not going to let go. Not tonight. Not ever.
He sat up on his makeshift pallet on the floor, his joints popping. The air in the room felt heavy, charged with a static electricity that didn't belong to their home universe. It made the hair on his arms stand up and his heart hammer a frantic rhythm against his ribs.
"Deep breaths," Seonghwa whispered to himself, his voice a dry rasp. "One thing at a time."
He stood up and navigated the minefield of their meager belongings. The apartment was small—two rooms and a kitchenette that smelled of bleach and copper—but it was a fortress against the strange, cold streets outside.
His first stop was the bathroom. He found Hongjoong slumped against the porcelain pedestal of the sink, his forehead resting on the cool ceramic. He looked skeletal, the sharp lines of his jaw emphasized by the pallor of his skin.
"Joongie," Seonghwa murmured, kneeling beside him. He dipped a washcloth into a basin of lukewarm water and gently wiped the sweat from the back of the leader’s neck.
Hongjoong didn't open his eyes. "I think... I think I managed to keep the water down for ten minutes today," he rasped. His voice was a ghost of the commanding tone that used to lead them onto world-class stages. "That’s a record."
"That’s progress," Seonghwa lied softly, his heart breaking. He helped Hongjoong sit up, supporting his weight. "Do you want to try to move to the bed?"
"Not yet," Hongjoong said, his hand clutching the rim of the sink until his knuckles turned white. "The room is still spinning. I need to keep thinking, Hwa. I’ve been trying to map the fluctuations in the air. If I can just find the frequency of the rift we fell through..."
He trailed off, his stomach heaving again. Seonghwa held his hair back, rubbing steady circles into his spine. It was a cruel irony; the man with the most brilliant mind, the one most capable of finding their way home, was being physically dismantled by the very atmosphere of this dimension.
"Focus on breathing for now," Seonghwa encouraged. "The math can wait until breakfast."
Breakfast was a grim affair. Seonghwa spent an hour preparing a soft porridge, trying to mask the metallic tang that seemed to permeate all food in this world. He moved to the second room, where Yunho and Wooyoung were.
Yunho was sitting by the window, staring out at the distorted skyline. His large frame was hunched, and his dark hair was messy. When Seonghwa entered, Yunho didn't turn around. He was tracing patterns on the dusty glass with a long, elegant finger.
"Yunho-yah, time to eat," Seonghwa said, forced cheerfulness lacing his tone.
Yunho turned, his expression blank and glassy. For a moment, there was no recognition in his eyes, just a vast, terrifying emptiness. Then, a small spark flickered. "Seonghwa? Is it... is it time for practice? I can’t find my shoes."
Seonghwa felt a physical pang in his chest. He set the bowls down on a crate and walked over to take Yunho’s hands. They were cold. "No practice today, Yunho. We’re just staying in. Remember? We’re on a long vacation."
"Vacation," Yunho repeated the word as if it were a foreign language. He looked down at his hands. "I feel like I’m made of smoke. Like if the wind blows too hard, I’ll just... scatter."
"I’m holding onto you," Seonghwa promised, squeezing his fingers. "I won't let you scatter."
A sharp, guttural cry cut through the quiet of the room. On the bed, Wooyoung’s body suddenly arched, his muscles seizing with such force it looked like his bones might snap. He let out a strangled scream, his eyes flying open, though they saw nothing but the agony radiating through his nerves.
Seonghwa was at his side in a second. "I’m here, Wooyoung, I’m here!"
He grabbed the heavy weighted blanket they had fashioned out of old coats and pressed it down over Wooyoung’s trembling limbs. This was the "spiking" period. The doctors in their world would have called it a neurological storm; here, it was just the price of existing in a body that didn't match the physics of the realm.
"Make it stop," Wooyoung sobbed, his voice cracking. "Hwa, please, it feels like there’s glass in my blood. It’s burning, it’s burning!"
"Shhh, I know, I know," Seonghwa whispered, climbing onto the bed to pull Wooyoung into his lap, pinning his flailing arms to his chest to keep him from hurting himself. He rocked them back and forth, singing a low, wordless melody. It was an old song, something from their trainee days, a remnant of a life that felt like a fever dream.
Yunho watched them from the window, his head tilted. "Why is he crying?" he asked softly. "Did we lose the trophy?"
"No, Yunho," Seonghwa said through grit teeth, trying to keep his voice steady while Wooyoung’s fingernails dug into his forearms. "He’s just tired. Why don't you bring him some water?"
Giving Yunho a task helped. It tethered him to the present. Yunho moved slowly, with a strange, floating grace, and brought a cup over. He watched with a tilted head as Seonghwa helped a shaking Wooyoung take a sip once the worst of the spasm had passed.
By midday, the apartment was a portrait of quiet exhaustion. Hongjoong had migrated to the floor of the living area, surrounded by scraps of paper he’d found in the trash, covered in frantic, shaky equations. He was pale, a bowl always within reach, but his eyes were burning with a desperate, manic light.
"The gravity is wrong, Hwa," Hongjoong muttered, not looking up as Seonghwa wiped the floor around him. "The constant is 9.8 in Seoul. Here, it’s... it’s shifting. That’s why my inner ear won't settle. That’s why we’re falling apart. We’re being stretched."
"Don't stretch yourself too thin," Seonghwa cautioned, placing a hand on Hongjoong’s shoulder.
Hongjoong looked up, his eyes bloodshot. "If I don't find the exit, we’re going to die here. Wooyoung’s nervous system will shut down, and Yunho... Yunho will forget he ever existed. I have to do this."
Seonghwa didn't have an answer. He knew Hongjoong was right, which made the weight on his own shoulders feel like lead. He was the only one who functioned, the only one whose body seemed to have accepted the transition with nothing more than chronic anxiety and a permanent tremor in his hands. He was the caretaker of a dying kingdom.
In the afternoon, the "Grey" set in. It was a period where the light outside dimmed to a dull charcoal, and the temperature dropped sharply.
Wooyoung was drifting in and out of a medicated sleep—Seonghwa had found some local herbs that acted as a sedative, though they left Wooyoung dazed and sluggish. Yunho was sitting on the floor, sorting through a pile of buttons he had found, humming to himself.
Seonghwa sat at the small table, his head in his hands. The silence was worse than the screaming. In the silence, he could hear the ticking of a clock that wasn't there, the sound of their time running out. He felt a sudden, sharp wave of panic—a familiar foe. His breath hitched, and the walls seemed to lean inward.
"Hwa?"
He looked up. Yunho was standing over him. For a moment, the fog in Yunho’s eyes had cleared, replaced by a devastatingly familiar warmth.
"You're shaking," Yunho said quietly. He reached out and smoothed the hair back from Seonghwa’s forehead. "You're doing a good job. We're all still here because of you."
Seonghwa’s composure shattered. He leaned his forehead against Yunho’s stomach and let out a jagged sob. He cried for the stages they would never stand on again, for the fans who didn't know where they were, and for the brothers he was watching crumble.
Yunho just stood there, a solid pillar, stroking Seonghwa’s hair. "It's okay. I don't remember much, but I remember you. You're the one who fixes things."
"I can't fix this," Seonghwa choked out.
"Maybe not," Yunho whispered. "But you can hold us while we're broken."
The moment of clarity didn't last. Ten minutes later, Yunho was asking who the man on the bed was and why he looked so sad. But those ten minutes were enough to give Seonghwa the strength to stand back up.
As evening approached, the sky outside turned a bruised, electric blue. Seonghwa went about the evening rituals. He helped Hongjoong wash his face, ignoring the way the younger man’s ribs protruded. He changed the bandages on Wooyoung’s wrists where he’d bitten himself during a particularly bad spike.
He gathered them all in the main room. It was a tight fit, but they needed the proximity. Hongjoong sat propped up against the wall, his notebook in his lap. Wooyoung lay with his head in Seonghwa’s lap, his breathing shallow but rhythmic. Yunho sat at the foot of the bed, watching the shadows dance on the ceiling.
"Tell us a story, Hwa," Wooyoung whispered, his eyes half-closed. "Not about here. About... before."
Seonghwa cleared his throat, pushing down the lump of grief. "Before," he began, his voice soft and melodic, "there was a city that never slept. It smelled like rain and grilled meat. We lived in a house with too many clothes and a kitchen that was always messy."
"I remember the lights," Hongjoong added, his eyes distant. "Thousands of them. Like stars on the ground."
"And the music," Yunho said, a small smile playing on his lips. "It was so loud you could feel it in your bones. Not like the humming here. It was... happy."
Seonghwa continued, weaving a tapestry of memories—of late-night dance practices, of laughing until they couldn't breathe, of the feeling of a thousand voices screaming their names in unison. He spoke until Wooyoung’s body finally relaxed into a deep sleep, and Hongjoong’s head lulled against the wall.
Eventually, even Yunho drifted off, curled up like a child at the end of the bed.
Seonghwa stayed awake. He watched the strange, alien moon rise over the jagged horizon. His body ached, and his mind was a frayed wire, but he took his post. He adjusted the blankets, tucked a stray hair behind Hongjoong’s ear, and kept his hand on Wooyoung’s shoulder.
He was the anchor. As long as he stayed awake, as long as he kept their memories safe, they weren't lost yet.
"Tomorrow," he whispered into the dark, a prayer to a god that might not exist in this universe. "Tomorrow, we’ll find a way."
Outside, the wind howled with a sound like tearing metal, but inside the small, flickering circle of their lives, Seonghwa kept watch. He was anxious, he was heartbroken, and he was terrified—but he was not going to let go. Not tonight. Not ever.
