What anime made you depressed or gave you extreme post anime depression?

Fairy Tail and Guilty Crown. Guilty Crown made me extremely depressed with how it ended. I'm not going to spoil it, but it hit me in the feels really hard and I was pretty sad and depressed for like a week. :( Fairy Tail also made me depressed with a certain part in the anime(no spoilers), I actually cried so hard even when I tried to hold it back. ;C