After Becoming Invisible, I Started Sharpening My Knife!

Yan Shiyi, female, afraid of society, dead at home, living alone, timid and poor. Inexplicably acquired the invisibility skill and became an evil messenger. As long as she catches a bad guy, she will receive a cash reward and her invisibility will be further enhanced. In order to earn a living, Yan Shiyi, who is as timid as a mouse, does not hesitate to put himself in danger. He really goes to great lengths!