John had raised his hand, and was about to administer what Dean was sure would be a blow when Cas stormed back in.
Dean and John both watched as Castiel walked forward and the door slammed shut behind him. The wind picked up and the sky outside grew dark; Dean saw it through the motel window. Castiel advanced further, and for the first time ever, he felt truly scared of his friend, remembering that Cas was a powerful angel.
'You will not hurt Dean. He is my friend, and I shall protect him,' said the angel, voice lower than it had ever gone. The sky outside rumbled, and Sam whimpered from where he had hidden under his bed.
Dean ran to his brother, away from his father and his friend, and hugged his brother close to him. 'Shh, it's okay Sammy. It's okay.'
Castiel watched Dean and Sam, anger lessening. The wind outside died down slightly, and the cover of cloud started to drift away. John advanced towards him and Cas moved into a defensive position. He doubted the eldest Winchester would dare try and strike him, but he had to be prepared for anyting.
'Now, I can't control you, angel, but I can call your brother and he'll deal with you I'm sure,' growled John, breath smelling of alcohol.
'My brother is a lot stronger than me,' said Castiel. 'And he would not be too happy if you called him here with no good reason.'
John bent down so he was Castiel's height. 'I want you gone,' he said simply. 'I don't want you anywhere near my sons ever again.'
Castiel glowered at him. 'If I think that either Dean or Sam are in danger, I will help them. They are my friends, and I am going to look after them.'
John turned to look at Dean. 'Seems like you have yourself a guardian angel, boy.'
Dean looked up and let slip a small smile aimed at Cas before he continued comforting his brother.
Castiel felt calmer, and the weather cleared up. He knew he would not leave, despite John Winchester's orders; he did not trust the man, had seen how he failed to look after his children.
John eyed him warily. 'If you even so much as hurt one of them I will not rest until I've found a way to-'
Castiel had reached out and touched his forehead, sending him into sleep. Then he lifted the sleeping body and placed it on the sofa, which despite his size, was not a difficult task. He turned back to look at Dean, who had a look of incredulity on his face.
'He's not dead, is he?'
'No,' said Castiel as he shook his head. 'Merely sleeping. The alcohol will have left his system by morning, and he will not remember this confrontation.'
Dean approached the sleeping figure cautiously. Then he looked at Cas. They stayed staring at each other for a moment until Dean remembered Sam and lifted his brother onto the bed, tucking him in gently.
'Come on Cas. Let's go to sleep.'
They crawled into the other bed together, and lay there, hands entwined beneath the covers. 'I guess my mom was right,' said Dean. 'Angels are watching over me.'
'I will protect you Dean,' Cas promised as he watched the other boy's eyelids flutter shut.