Cas: LET ME GO YOU BASTARD!
Cas: WHAT THE FUCK!? YOU-YOU CAN'T KEEP ME HERE AGAINST MY WILL!
Cas: W-what...?
Cas: D-do whatever you want! I don't give a shit about most of those people anyway...
He says that but he's unable to keep a slight tremor out of his voice.
Cas: Well-great, good for him...have fun with that...
