R-X, a transnational criminal organization, is extremely mysterious and is currently one of the most troublesome organizations for Interpol.
There are a group of professional killers with extraordinary skills in the organization, who are like "scavengers". They usually work in groups of two or more people, divided into twelve groups, and each group is codenamed after the twelve constellations. Among them, the two people codenamed "Gemini" are quite special...