Mirlo is the princess of the Water Drop Kingdom and Narlo's older sister. Just like Lione, she is also personal. Mirlo is very artistic and makes excellent paintings. She takes care of Narlo very well. Because Mirlo appears as a spoiled brat in the manga, she causes numerous trouble for Fine and Rein. Although her name was originally spelled with the l before the r, most people didn't spell her name as "Milro".