The final appearance of , as he revealed that he was in love with him. had never outright stated this during its run, so Castiel’s admission was something that was big deal the first time around.
Rewatching the series makes Castiel and Dean’s interactions appear from a completely different perspective, as the former’s growing attachment to Dean is apparent.
The dynamic between , although the pair changes quite a lot. Viewers expect them to behave like heroes in the original run of the series, but the truth is that they got very harsh over the years and even neglected their main mission.
Dean and Sam started out never compromising in their goal to save people from the supernatural, only to easily slay any person possessed by a demon or a monster with no remorse. Sam and Dean would never have done that earlier on, so those who watch again will be aware that the main protagonists become a bit too harsh later on.
There was always the hope that there would be a positive ending for those who appeared in the series until fans learned what the actual conclusion was. There are , such as Charlie, Crowley, Kevin, Ketch, and more, but none of them got happy endings.
Watching once more will bring a sense of melancholy from fans toward these characters because they know that their departures from the show will be sad.
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