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Aikatsu! Secret Story (アイカツ！Secret Story) is the third "arc" of Ciao's manga serialization of Aikatsu! and its second original arc. This arc features the manga original character Marie; Ichigo Hoshimiya's acquaintance when she was in America.
This "arc" debuted in Ciao's March 2014 issue and is planned to be a long-running arc.