Dean can't help how his eyes flicker back to the shelves at the mention of every world. Huh. Okay scratch that, Sammy's head may actually explode in excitement at the variety of options for reading material that must be present all throughout this place. "Every world," he echoes softly because also that's a thing too now. Different worlds. Worlds where monsters may not actually eat people and need to be hunted. Where Somewhere he and Sammy had different lives, or may not even exist in. "That's still gonna take some getting used to." Because it's definitely hard to wrap his head around.

Dean's hands are calloused when he shakes Llewellyn's hand, with a strong grip though not in an effort to test the other man but just who he is. "It's nice to meet you." Detective. And he finally gets past the books to really take in the clothing, giving the slightest arched brow to them, because they look far more spiffy and classed up compared to the jeans, black t-shirt and flannel button down that isn't buttoned Dean is currently wearing. Definitely future casual, or well Dean's current time normal for people. "Winchester," he offers after a moment since Llewellyn offered his full name, "last name's Winchester." Part of him wonders if he should be going by a different name, but how would he explain that later if he ended up being a long term resident of this place. "How long have you been here, if you don't mind me asking?"