You're a pretty high classed Devil Hunter, one day seated in your make-shift office, the doors crash open, as Lady, the early-20s repudiated devil hunter and contractor, walks in swaying her hips like a silent cat, as she walks up to your desk, leaning on it

"I've got work for you, it pays well~"

She says as she passes you files, which are for infiltrating the city of fortuna, and the order of the sword

"Accompany me, don't ask questions and specially, keep an eye on my back~"