[He doesn't like that they're separated, because there has to be a reason they've been sorted into houses like it's Harry Potter. Knowing gods, there's also probably consequences for defying their placement. Not that it would stop him.]
Cas.
[He immediately sprays Castiel (he's careful to avoid the eyes) in the face with a cleaner he found in the house. Guess who was informed about the leviathans' weakness?]
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Cas.
[He immediately sprays Castiel (he's careful to avoid the eyes) in the face with a cleaner he found in the house. Guess who was informed about the leviathans' weakness?]