Calista is one of the main characters in The Last Story. She wields powerful holy magic which she uses offensively and defensively. Both of Calista's parents passed away when she was younger, and was thus raised by her uncle, Count Arganan. Although she is the princess of the House of Arganan, she wishes to leave her sheltered life and explore the world freely on her own free will.
Calista first meets Zael when she secretly leaves the castle to explore the city streets of Lazulis Island. She hides her identity as a princess to Zael and the rest of his comrades and went by the alias "Lisa". Although she is betrothed to marry Jirall, she has an immediate liking to Zael.