He was a little disappointed when the boy-thing stopped playing; his music was unfamiliar to Cas, but jarring as the sounds were it had been more pleasant than the disgruntled noise from the crowd nearby. But the boy-thing was staring straight at him, and he was talking.
Castiel squinted at the strange creature in front of him. There was something human about him, but it had nothing to do with his shape. He felt more like a restless spirit. There was something else too, something that felt almost like... like Grace. Whatever power this creature had, he was definitely no Angel, nor was he a Nephilim. Cas would need to examine him closer to tell more.
Then there was his physical form, which was almost as strange as his spirit. "You... I've never seen anything like you before," Cas said, stepping closer. "Why are you made of plants?"