Relie Aingram is the principal of the Royal Knight Academy, the elder sister of Philuffy Aingram and a friend of Lux Arcadia.
She has pink medium length hair.
She was born as the eldest daughter of Aingram Financial Conglomerate during the time of the Acadia Empire. More than 7 years before the story - sometime before the fall of the Empire 5 years ago she became acquainted with the seventh prince, Lux Arcadia.
About more than 20 days before the coup d'etat, she pleaded to the imperial court when her sister Philuffy was taken away for experimentation to release her.