Rena Kunisaki (国崎玲奈, Kunisaki Rena) is a player that originally plays as a female BladeMaster named Brigit until she wins a special chibi version of Blackrose's avatar in a contest developed by Aura. She originally becomes bored of The World until she learns of the exploits of Kite and his companions. She starts playing The World along with her brother, who also won a version of Kite's avatar, as her new character to support him in becoming a hero as well. The two work to reunite Aura's daughter, Zefie, with her.

Source: Wikipedia