Chapter Text
Isagi didnโt close his eyes. He didnโt get out, either.
Instead, he just sat there in the dim, blue-tinged shadow of the vinyl chair, his features completely unreadable under the harsh glare of the hallway lights bleeding beneath the door. The rhythmic beep... beep... beep of the heart monitor was the only thing filling the silence, a clinical metronome marking the distance between Rinโs jagged breathing and the oppressive Tokyo heat waiting just outside the window.
"I'm not closing my eyes, Rin," Isagi said softly. His voice didn't have that frantic, chest-heaving panic from before; it was steady, heavy, and anchored. He reached down, his fingers lightly brushing the metal guardrail as he adjusted his posture, the small clink of his wrist bracelets sounding exceptionally loud in the quiet room. "And I'm not getting out. If I leave, you're just going to rip through your bandages just to claw at your arms until thereโs nothing left. I'm staying right here."
He watched Rin's chest rise and fall in a sharp, defensive stutter. Even half-sedated, Rin was trying to project that fierce, untouchable egoโspitting insults like a cornered animal trying to mask how badly it was bleeding.
"You're an idiot," Rin rasped, turning his head back toward the dark window pane, his jaw clenching so hard a vein throbbed violently at his temple. "A completely nosy, self-righteous idiot."
"Probably," Isagi admitted without a hint of irritation. He leaned forward, resting his elbows on his knees, his large blue eyes tracking the pale, rigid silhouette of Rin's shoulders beneath the stiff hospital fabric. "But apparently Iโm the only idiot currently keeping you from drowning in your own head, so you're stuck with me."
Before Rin could formulate another bitter retort, the heavy door slid open with a soft, mechanical hiss. Dr. Tanaka stepped back into the room, his tablet tucked under his arm. His face wasn't masked by the usual vague, comforting smile of a physician; it carried the heavy, unyielding gravity of a man about to deliver a sentence.
He didn't check the vitals this time. He walked straight to the foot of the bed, his fingers tapping a final command into the tablet before locking the screen. The sudden silence from the device sent a cold shiver down Isagi's spine.
"Mr. Itoshi," Dr. Tanaka began, his voice dropping into a low, clinical register that stripped all the mystery out of the room. "The results of the neurological scans are clear, and after observing the severe tactile and visual distortions you experienced tonight, we have a definitive diagnosis."
Isagi held his breath, his eyes darting to Rin, who had gone entirely still beneath the sheets.
"You are experiencing Somatic Symptom Disorder with severe pseudoneurological features, aggravated by Schizotypal Dissociative episodes," the doctor stated, the heavy, multi-syllable words landing like blocks of concrete in the small ward. "The 'static' you are hearing, the extreme drop in temperature you perceive, and the physical clawing at your skinโthey are not standard panic attacks. Your brain is misfiring under extreme psychological stress, translating severe emotional trauma and academic burnout into physical, terrifying hallucinations. Your body genuinely believes it is freezing to death."
Isagi felt a sickening drop in his stomach. Somatic. Dissociative. Hallucinations. They were cold, clinical terms meant to categorize madness. They were labeling Rin as broken.
"We can manage this with a strict regimen of atypical antipsychotics and intensive cognitive restructuring," Dr. Tanaka continued, turning his gaze directly to Isagi. "He will be discharged tomorrow morning, but he cannot be left alone. He needs absolute stability. If his routine shatters, the somatic episodes will return, and his brain will lock him right back into that freezing state."
"I understand, Doctor," Isagi whispered, his throat completely dry. He looked at Rin, whose face had gone entirely pale, his teal eyes wide and hollow as they stared blankly at the opposite wall. "I'll make sure he takes the medication. I'll keep him grounded."
With a quiet, heavy nod, the psychiatrist turned and slid through the door, leaving the two roommates alone in the quiet aftermath of the verdict.
Isagi stood up from the vinyl chair, his bones aching with fatigue, and stepped closer to the bedside. Rinโs eyes were tightly shut now, his jaw clamped so hard his whole face looked like a carved block of marble. He looked completely fragile, stripped of the terrifying armor he usually wore.
Gently, without saying a word, Isagi reached across the metal guardrail and pulled the coarse, starchy hospital blanket up over Rin's shoulders, shielding him from the artificial chill of the room.
โโ .โฆ
Through the heavy, chemical fog settling over his consciousness, Rin felt the precise moment Isagi stood up.
The vinyl chair groaned a soft, pathetic sound, and then there was the faint, rhythmic rustle of Isagiโs clothes moving through the dark. Rin kept his eyes resolutely shut, his mind still reeling in a chaotic, self-destructive loop from the doctor's words.
Somatic Symptom Disorder. A defect. A mechanical failure of his own skull.
He braced his spine against the mattress, expecting Isagi to say somethingโto offer some disgusting, pitying words of comfort now that he knew Rin was officially certified as crazy. He braced for the suffocating weight of Isagi's gaze.
Instead, a soft, heavy warmth settled over his frame.
It was just the coarse, starchy hospital blanket being pulled over his shoulders, but the gesture felt like a physical blow. It was warm. Infuriatingly, undeniably lukewarm.
Rinโs jaw clenched in the dark, a bitter, defensive knot tightening in his throat. He wanted to reach up, to tear the fabric away, to snarl at Isagi to take his disgusting, pathetic pity and get out. But the sedatives were an iron weight in his veins now, pinning his limbs to the mattress, turning his muscles to lead. He couldn't even manage a twitch of his fingers.
He was completely at Isagiโs mercy, tucked into bed like a broken patient while the boy he was supposed to destroy stood watch over him.
As his mind began to drift, slipping backward into the dark, the true horror of the diagnosis settled deep into his marrow. The doctor wanted him to believe it was just a disorderโa glitch in his chemistry. But as Rinโs consciousness began to dissolve into the heavy, medicated darkness, he realized the ultimate, terrifying truth.
If the freezing void wasn't a supernatural curse haunting Apartment 505, and if it wasn't an external monster trying to break him... then the monster was entirely inside his own head. He was trapped in a room with his own fracturing mind, and Isagi Yoichiโthe person whose existence he despised the mostโwas the only chemical anchor keeping him from disappearing into the static forever.
The hallway light outside the room finally went darkโ
โAnd the clinical silence swallowed him whole.