Really now? The whole process through which our brains store memories is kinda fascinating, isn't it? [Raven's a nerd and your bedtime stories are the best ones by her standards, Cas.]

[Shadows mewls softly answering his Master's question.] Sleeping on my bed, huh? [Another mewl before he jumps onto the couch and then onto Raven's lap. Raven turns toward Castiel.] Shadow. [And then she looks back at the kitten.] Shadow, this is Castiel. He's a nice guy but sometimes he uses cat's blood to draw sigils so you might want to be careful around him. [She smirks a bit as she says the last part. Shadow, of course, only reads her expression and understands that the human sitting next to her can be trusted. So he comes a little closes to Castiel and sniffs his coat.]