ミリア

Ricca's sister, who is a fair bit older than her. Kindhearted, and the most beautiful woman in the village. She is prone to worrying, and finds it hard to let Ricca be independent. While Ricca is away collecting herbs, the village is attacked and Miria is captured by monsters and transformed into a succubus. Now a demon, and the natural foe of the holy knight, Miria captures Ricca and attempts to sexually subdue her.[From DLSite]