Sam's point of view
Castiel's eyes rolled back and his body began to convulse uncontrollably. "Cas!" Dean shouted, slamming the emergency call button. The loud beeping of the heart monitor snapped Sam out of his shock, and reality hit him like a train. Within thirty seconds, the room was filled with medical personal. The twenty seconds that had passed felt like an eternity. All the while, Sam had been standing there next to his older brother, useless. "You need to leave the room," a nurse said, turning back to the patient immediately.
Dean's point of view
Dean was still standing frozen beside Castiel's bed. His muscles were tense, and his mind clouded with fog. He heard the nurse's voice as if from underwater but couldn't process what was being said.
Sam's point of view
Sam, however, began to grasp the full weight of the situation. He grabbed Dean by the arm and pulled him out of the room. His eyes scanned the hallway and spotted a chair against the wall. Sam guided his brother over to it and pushed him gently on the seat.
"Hey, Dean." Dean didn't respond. The hunter just stared blankly at the wall. With a heavy sigh, Sam slapped Dean across the face.
Dean's point of view
Dean flinched. "Castiel," he gasped and shot up from the chair. Black spots clouded his vision. The room began to spin. He looked at Sam. His brother's lips were moving, but he heard nothing. His ears rang. The spinning room faded to black. The last thing he felt was Sam grabbing his shoulder.
When Dean regained consciousness, he was lying on a bed. He felt weak and disoriented. That's when he noticed Sam sitting across the room in a chair, staring blankly out a small window tot he hallway. "What happened?" Dean croaked. His voice sounded like he hadn't had water in days. Only now did Sam realize that Dean had come to. He turned quickly, relieved. He grabbed the cup on the table and handed it to his big brother. Dean took a few sips before a coughing fit took over. Sam rubbed his back until it passed.
"You collapsed in the hallway. The nurse said you were dehydrated, sleep-deprived, and had dangerously low blood sugar. The shock dropped your blood pressure, and you passed out," Sam explained calmly.
As he spoke, the memories came flooding back. "What about Cas?" Dean rasped. Sam looked down at the floor, his expression darkening with worry.
"Sammy… is he—?" Dean couldn't bring himself to finish the sentence.
The thought of Cas being gone was too much. That would mean he was truly gone forever. And God was dead too, killed by the Darkness, by Amara. And Amara was still out there, lurking. No. Focus, Dean. This is about Cas.
"Dean! Hey!" Sam snapped him out of his spiraling thoughts. "No, he's not dead. But he's in a coma. The doctors stabilized him, but the seizure was severe." "I have to see him." Dean tried to sit up, but the dizziness stopped him halfway. Sam used the moment to push him back down. He tried to fight back, but didn't have enough strength. "You're still hooked up to an IV," Sam said. "The doctor said you need to rest."
"Do you think he'll make it?" "As Cas said himself, he needs new grace. Without it, he'll die. Dr. Shawn said if there's no improvement soon, things look bad."
"That's where I come in. I thought your little rebellious angel would last longer. I'm truly disappointed. He would sacrifice himself just to avoid wipe out another precious angel's life" a familiar voice interrupted.
