It's a Magical girl metaseries, that was so 流行的 there have been 9 different TV shows, 9 movies, 4 All-star specials, and 16 video games about it to date. There's about a total of 416 episodes. The latest started running in 2012, and there are probably going to be 更多 in the future. Good luck finding time to watch them all! ^^
