Artemis Vesper was enjoying her regular life, defending the village of Belltou from monster attacks. However, this all changes when she opens a cursed box, and unleashes an ancient curse upon herself. The curse takes the form of an annoying demon called Azrael, tempting her to do bad deeds. In horror, she asks Azrael how to put a stop to the curse. He tells her about a city of sand, located deep in the deserts of Extremis. Artemis sets out to find this city, accompanied by a variety of travellers on the way...
19 parts