Inspired by this https://archiveofourown.org/works/19019665
Gabriel pushed open the door to the bookshop, striding in and looking around as he dragged his charge by a set of manacles. "Aziraphale," he called.
Aziraphale rolled his eyes. "Hello, Gabriel," he huffed. "Can I help you?"
Gabriel pushed his charge forward. A tall man with tattered black robes and golden eyes with slitted pupils. "This is for you. Do what you want with it."
"Uh...may I ask why?" Aziraphale asked, moving to help the man to sit down.
The man jerked away from Aziraphale's touch.
"Was just told to bring it to you. Good day, Aziraphale." Gabriel turned and left.
Aziraphale frowned, removing the shackles from the man's arms after closing the door. "Are you alright...?"
The golden eyes regarded Aziraphale suspiciously, a soft hissing reaching Aziraphale's ear.
"I won't hurt you," Aziraphale said gently. "Can you follow me upstairs? There are a bed and a kitchen in the loft."
The man slowly followed the angel, steps hesitant and cautious.
Aziraphale led him to a bedroom, smiling. "Please...sit. Are you hungry?"
The man sat down but shook his head.
"How about a bath?"
The man backed up as if the angel had just drawn a weapon.
"Not holy water! Sorry...regular water. I promise."
The golden eyes hadn't lost their tinge of suspicion but he slowly nodded.
"Okay...why don't we draw it together?" Aziraphale said and headed into the bathroom, having the demon watch him draw the bath. "I'm going to put some salts in there. They'll help you relax and they smell good too."
The demon followed Aziraphale, watching him carefully. There was something so familiar about his eyes...
"I'll leave a fluffy towel here for you and I'll go grab you some clothes."
Another slow nod. The demon's skin was oddly...red. Almost like a bad sunburn...
"Were you burned...?"
"The light Up There," the man rasped, voice nearly silent.
"Oh...alright. May I try and help? I won't use any sort of holy magic."
"Why would you? I am your ssssworn enemy."
"Because you're hurt..."
The demon eyed Aziraphale worriedly.
"Can...I make anything more comfortable?"
"I'm fine..."
"Okay...I'll give you some privacy."
"Crowley..." the demon murmured.
"Pardon?"
"Crowley," he said. "My name..."
Wait...hadn't the snake from the Garden in the Beginning said his name was "Craw-ley"?
"Crowley...I like it more than the first one."
Crowley tilted his head. "Did you know me earlier...?"
"I vaguely remember you from Eden. The snake?"
"Yessss..."
"I was the guardian of the east gate," Aziraphale smiled.
"You're the one who gave away your ssssword...."