Final Fantasy XIII Episode Zero: Promise
Final Fantasy XIII Episode Zero: Promise is a novella depicting the events prior to Final Fantasy XIII. It was released on the web in Japanese, with only fan translations available in English. The novella is divided into seven parts: Encounter, Stranger, Treasure (Family), Search, Friends, Present, and Tomorrow.
 Part I: Encounter
 Part II: Stranger
 Part III: Treasure (Family)
 Part IV: Search
Search depicts how Fang and Vanille become separated from each other, and follows Fang as she meets Cid Raines and agrees to join him.
 Part V: Friends
Friends follows Hope Estheim as he tours Euride with his mother, and remembers a class trip with his friends.
 Part VI: Present
Present describes Serah and Snow searching for a birthday present for Lightning.
 Part VII: Tomorrow
Tomorrow explains how Fang and Vanille became l'Cie, and depicts what happens to Vanille after she was separated from Fang.
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