The Signers are the only group that can summon the legendary Crimson Dragon, the embodiment of the red star. There are five people in the world that have the Mark of the Dragon and Five Dragons that fit into the legend. Each birthmark represents a part of the Red Dragon God, as these marks themselves are actually broken pieces of the ancient divine red dragon itself, that later were divided into five parts. Thus engraved and sealed into five people called "Signers".
