As she continued to evade Meorise's attacks, Antoinette then activated her ability —Structure of Light— to observe Meorise's Mana flow and realized that it was depleting at a very fast rate than normal.
…••••••••••••••••••••••….
Structure of Light (Hikari no Kōzō) is an ocular ability which enables the user to view the Mana energy network within a living being appears as how the human circulatory system works but with a golden hue to represent the flow of Mana within the body; with faint light indicating depletion; bright light indicating full flow and no visible light indicating near death or complete death.