Castiel grumbles a little in his sleep. Being woken up with kisses is incredibly pleasant and much better than the alarm clock. Still, he can't help it - he's not a morning person.

This applies to all times of the day. No matter how late or early, Castiel is reluctant to get up.

Now he grumbles a little, but quickly wakes enough to reciprocate those dresses and give an appreciative sigh at the fingers playing along the top of his collar. Feeling loved and owned right upon waken is an even better way to start the day.