Part 3 of the SHWD series follows office rivals Leone Cass and Jun Nonaka in the Fukuoka Branch office of their male-dominant private military company, 'Special Hazarous Waste Disposal'. The company's task is to dispose hazarous waste which include Dynamis, anti-human weapons used during the war. Leone Cass is ace in the field and gets along with pretty much everyone at the office. All expect for Jun. They have been butting heads since they first met when Leone mistakened the then 26 year-old Jun for a small child. Being the only two women in their branch, they are as opposite as they come but could their differences be set aside when Leone's vulernable side comes to light?