Thorin turns his head slowly towards the excited babbling of a nearing voice. The pleasure at seeing Bilbo comes as somewhat of a shock to him, instant and vast as it is.
Bilbo is here.
He reasons that the joy must for the most part be rooted in the fact that if more people are appearing perhaps he will see his company again, but he cannot deny that Bilbo himself is the cause of some happiness.
Thorin owes him a great debt of gratitude, after all. And an apology.
"Bilbo," he smiles (possibly for the first time in genuine pleasure at the Hobbit), limping slightly as he crosses the shrinking gap between them in order to greet his friend. "It is so good to see you."
Thorin stops just short of embracing Bilbo, but the smile does not face from his face.
"How came you to be here? Ere long ago? Do you have others of our company with you?" he asks, habit making him look Bilbo up and down to check for wear or injury.