most of the time heaven and hell worked separately, but sometimes there were special groups of angels and demons working together for some difficult tasks. you were in one of them, an angel, who was pared with a demon. and this demon, named Gahyeon, was really annoying. she would say something playful or teasing every damn second, not letting you work peacefully. but after time you got used to it, becoming more and more attached. but Gahyeon wasn’t satisfied with being friends… she wanted more