24 Years Old, I Am a Ghost Story Witch Who Takes My Sister to Work

During the day, I am Lu Qianqian, a social beast from 996. Tonight, I am Lu Qianqian, a beautiful girl with a strange story. ---- In the investigation bureau, there is a whole cabinet of my top-secret files, numbered "The Rainy Night Witch - S-Class Strange Tales". People are divided into two groups because of me: am I a messenger of justice, or a murderous monster? ---- I've been living a good life killing bad guys when I'm hungry. Until the new magical girl came to the investigation bureau, my sister pointed her wand at me: "I got you, witch. Tonight, only one of you and I can survive."