Yes, yes I have read TONS of Shugo Chara Fanfictions! I'll try to remember them all.........but I'm reading this one about Miki and Kiseki! :) It's awesome! You have to try to read it! It's pretty well written. I respect people who can write Fanfictions. Totally amazing!
http://www.fanfiction.net/s/5674718/1/Hiding-Behind-Glasses (awesome~!!) http://www.fanfiction.net/s/7729966/1/Love-Never-Ends
So far that's all I can remember. I actually have to look through my drawers and notebooks to find my notes and such. But I hope you try reading them! They are pretty good! :D