Piana is a young and curious girl who will greet Totori when she arrives at the frozen Frontier Village in Atelier Totori. Despite her coming from a village in which the inhabitants are meant to be sacrificed, Piana is a cheery young girl who craves excitement and seeing the world beyond her village.
She is not afraid to speak her mind, and is quite adventurous.
Piana becomes a stowaway on Totori's ship in the latter portion of the game, and from then on resides at Totori's home. She becomes fast friends with both Totori and Ceci.
Piana refuses to return home to her village as she would eventually be eaten by the tower devil, Evil Face. In trying to sort out this problem, Totori stumbles into the path of defeating the devil. However, even if the player defeats Evil Face, Piana will keep living together with Totori and her family throughout the rest of the game.
She is also taught alchemy by Rorona, who tells Piana that she is a natural at alchemy. Totori grows jealous of the constant attention Piana gets from Rorona and Ceci and her alchemy talent. This chain of events eventually leads to the "Still a Child" event and trophy.