Board Thread:Episode Discussion/@comment-3125844-20151016221837/@comment-26976525-20151017013324

It might also refer to a fairy tale of that week. There are fairy tales with 7 knights in them. But if they don't address the keys after a title like that somewhere in the episode it would be very annoying to fans.

100th episode deserves a crew cake. Guess we will see pictures of that.