Holly Mad-thane (ホリー・マドセイン, Horī Madosein) is the 9-year-old daughter of Duke David Mad-thane and the Lady Mad-thane. She is voiced by Kana Hanazawa (Japanese) and Therese Nguyen (English). Claus first meets Holly when her mother hires him and Lavie to deliver a message to Duke Mad-thane. Holly gives Claus a letter that she wrote to her father to be delivered as well. When Duke Mad-thane reads the letter, it convinces him to retreat from the losing battle against the Disith and live to fight another day, rather than fight on and die like the code of chivalry demands.