If you remember LuLu DeMorcerf, from Shugo Chara!! Doki, she was a filler character, along with the whole plot behind her. Shugo Chara! Party! is also a filler, but it is a very BAD filler.
Not only, by making Rikka, do they get contradict things that were explained earlier in the series, but they ruin the original plot from the manga. It has NOTHING to do with what happened in the manga! It's completely different. This wouldn't be as bad if it was actually ENTERTAINING! Not only that, but over half the show is full of cosplayers who are also terrible actresses, and a corny, poorly drawn cartoon. Even when I skipped the cosplaying and corny cartoon, I was still very disappointed. Way to ruin a great anime, and manga.
I tried to force myself to watch it, at least until I got past the episode about my favorite character, but it was so awful, I couldn't even manage that.
They might as well get the manga, rip it apart, stomp on it, throw it in a fire, and when the fire goes out, dance on the ashes. That is how much respect they showed the manga.
