More than friends, less than lovers. So what exactly are they? Two equally talented S-class mercenaries quickly grow close, but one becomes increasingly possessive. “Be my permanent partner. Pair up with me, and only with me.” What begins as jealousy over working with others slowly reveals something much deeper. Years later, when the possessiveness becomes impossible to ignore, the answer is simple: “I told you. If someone else takes what I want, it means war.”