A/N: After seeing the post on Tumblr depicting this, I couldn't not write this. So, here you go!
Disclaimer: I don't own Supernatural. If I did... Well, things would be different.
The scratching continued from the opposite side of the wooden door, ricocheting ominously off the walls of the dark room. The sound was like nails on a chalkboard and sent chills down Dean's spine. He tightened his grip on the gun he held before him, cautiously approaching the closet.
A single lightbulb flickered once, before coming back on and shining once more.
Dean didn't hesitate when he was within reach of the doorknob, throwing the only barrier between him and the unknown as far open as it would go.
"Dean!"
Though he didn't flinch or give any outward sign of surprise, Dean was startled to find Castiel standing in the middle of the broom closet. The angel didn't look amused by his predicament.
Dean blinked once and lowered his gun. "Cas?" he asked. "What're you doing…" He gestured their surroundings. "In the closet?"
"I was searching for you," Castiel replied, as if this were blatantly obvious.
Dean cocked his head to the side, confused. "And why would you be looking for me here?"
"Sam required your help in the library, and I offered to retrieve you," Castiel answered. "When I asked where you were, he informed me that you were in the closet and refused to come out."
This caused Dean to pause, then scowl. He didn't reply to Castiel's statement, rather choosing to stalk out of the room, toward the library.
Shouts for Sammy to "Get your ass down here!" began echoing through the bunker.
Castiel stood where he was for a moment, attempting to piece together what had just happened, but upon failing, merely shrugged and dismissed it.
There were some things the angel would simply never understand about humans.
