Amu accompanies Yaya to the guardian's ballet class. During practice, the class's prima Maika Himekawa sprains her ankle and Yaya is chosen to be Maika's stand-in for the upcoming performance. Meanwhile, Nikaidou meets with Ikuto on the street and informs him that that Maika's egg may be the Embryo, but if it is not, Ikuto will need to clean up.
ガーディアンの仕事帰り、あむはガーディアンの1人である結木ややとバレエのレッスン場を訪れる。そこには、教室始まって以来の天才少女・姫川舞香がいた。だが、稽古中に舞香はけがをしてしまう。
