Phoena

Phoena is the main heroine of Chain Chronicle. A Chronicler-Class Cleric, she is a mysterious girl who carries the Chronicle and a Chronicler-Class Cleric, a mysterious book that holds the world's history. She has retrograde amnesia; she cannot remember who she really is when she is first attacked by the Black Army until Yuri (Hero) saved her. Over time, she begins to trust Yuri (Hero) and the others as she tries to discover the mysteries behind the book.

[Spoiler] At the end of the first story, she is revealed to be the daughter of the Black King. [/Spoiler]

(Source: Official site)