There are many perfect series in the world avatar the last airbender gravity falls the legend of korra. This is third place for its amazing story and making you cry that early adventure time dont really make you but this episode is just so much better then I remember you I loved I remember you but they dont have the flashbacks. This is also better than come along with me cause I felt the endings story was very rushed.
This is my second favorite show over korra over steven universe almost over everything except avatar the last airbender. Seeing Simon becoming crazy is sad and also seeing Marceline suffer of this also is sad.