When something that you have put a lot of time into recently is finally over (like the finale to a tv series that you love, or the end of a great video game trilogy) you are sometimes left melancholy, and with a feeling of "what do I do now". This lingering sadness is called "Post Completion Depression", though it's often shortened to P.C.D.
Anime enthusiast: So have you finished watching Kill la Kill yet!?
Casual anime fan: Yeah, it was great, in fact, I think I'm starting to get Post Completion Depression.
by LILJJH September 11, 2015
mugGet the Post Completion Depressionmug.

Completion Depression

The sad, empty and unfillable void left by the completion of an amazing game
I have completion depression after finishing Sekiro
by Shaggy-_420_- October 26, 2022
mugGet the Completion Depressionmug.