The construct was originally built for the training of Briar's younger sister, Mira. Unlike Briar, a figure known for her cautiousness and perhaps even a lack of natural talent, Mira is her complete opposite in almost every conceivable way except for their striking physical resemblance. Where Briar might be calculating and hesitant, Mira is bold and might rush in. Where Briar is quiet and reserved, Mira is loud and flamboyant. This fundamental contrast in personality makes the training construct's design and function particularly crucial, as it needed to compensate for Mira's inherent aggression and perhaps even a volatile temperament, forcing her to develop skills through discipline and repetition rather than instinct.