Lavinia is a depressed prostitute working at The Brothel of Caihong City (a famed institution) under the Madam's strict supervision. As a lodger of the Brothel she receives an unlimited supply of Sertra-X (the anti-depressant cigarettes she is addicted to and also dependent upon for her survival).
When she was four, Lavinia watched her father jump in front of a Trabantmobil and roll underneath the wheels to his death. She inherited his clinical depression.
Lavinia is short, skinny and strong but her appearance is deterioriated due to the harsh wintersummers of Caihong City. Her skin reads years of fighting, training, stealing and killing. She always caries around her butterfly catcher - a powerful weapon made of MA2 - a compound found in Mercury buttercups.
Not only does Lavinia work for the famed Brothel institution, but she also is one of the pioneers of Madam's underground organ black market operation. However, everything changes when Lavinia randomly gets assigned to kidnap a child that happens to be wearing a unicorn mask...