Es(えすEsu), whose name is an abbreviation of Embryo Storage(エンブリオストレージEnburio Sutorēji), also known by her extended student name Es Mitsurugi(御剣えすMitsurugi Esu), is the main heroine of XBlaze – Code: Embryo and a former Embryo Storage. She is the true protagonist of XBlaze – Lost: Memories. She is set to appear in the console version of BlazBlue: Centralfiction as a playable DLC character.