The Yin-Yang Shop

[A paranormal mystery for female readers, with two female leads, multiple male leads, and elements including spirit mediums, immortals, and travel between worlds] I was born dead, abandoned by my parents, and adopted by my master. When I was seven, I gained a lotus sister. When I was twenty, my master suddenly disappeared, leaving me three demands. The third was that I remember the marriage arrangement she had made for me when I was seven. The next day, a wolf knocked on my shop door...