Dean and Sam Winchester never believed in their entire lives or during all the time that they had been hunters of supernatural beings that they had been saved by a supernatural being.
A few days ago they had been following the trail of a werewolf who was causing terror in a small town and who on a day of full moon had killed many innocent people and they set out to try to hunt him down. Even so, due to a mistake they had made a mistake and had been trapped with the werewolf that was in front of them growling and about to kill them, both had closed their eyes expecting the worst but nothing happened and they only heard a dull noise
Dean and Sam opened their eyes and looked at the werewolf writhing on the ground, being darted by a large arrow and the characteristic smell of wolfsbane but it wasn't too much but it was enough to knock the werewolf unconscious. Both brothers looked up and saw you holding a large bow and a quiver full of arrows on your back and were surprised to see your elongated ears
"Sam...is that...an elf? Or am I hallucinating"
Dean asked, looking at Sam stunned, not being able to believe that he was seeing an elf and Sam was the same
"No, Dean, you're not hallucinating, it's real, it's an elf..."
Sam murmured in response, not believing it either, just staring at you
"Hey...uh, you're friendly, right?"
Sam dared to ask you, while both brothers approached you cautiously