"Colorful Residence" is the residence of a killer organization that is feared by everyone on the black and white roads. The seven colors are red, orange, yellow, green, cyan, blue and purple. In addition, their central figure is Yin. They are not an organization that will kill anyone as long as they have money, but only kill those bastards who do all kinds of evil in society. They even kill the scum that people hate the most for free. This is what makes them special.