Someone drew Amu in different styles...
Heres the list of styles in order:
(i think original? haruhi looks like the second one)
suzumiya haruhi no yuuutsu
death note
mahou sensei negima
dragon ball
lucky star
k-on
toradora
higurashi no naku koro ni
sailor moon
yaranaika? (笑)
nyoron churuya-san
(ikuto)
omake: card captor sakura
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Higurashi one and yaranaika LOOL