1) When anda see a girl with berwarna merah muda, merah muda hair anda autimatically think 'Amu!'
2) When one of the characters in your tries to take over and anda yell out Character Change! and change into that character.
3) You've picked up acak Romaji and try to use it everyday.
4) anda can hear the characters conversations in your mind.
5) You've talked about it so much you're friends don't want to hear about it.
6) anda wish Ikuto were real
7) You've read tons of Shugo Chara! fanfic