Some of them are considered a monstrous plague, and other-dark gods, dragons are almost as ancient and powerful as one and other AERS, and during countless years lived wildly and freely, standing and flying through the open sky. But everything has changed. The dragons were deceived and enslaved by the evil Loki and the traitor to Nidhogg, a black dragon. Now his only hope of freedom is in those few dragons who were able to avoid slavery, one of which was Iris. With ancient fire, burning in her veins and eager for revenge, Iris united with Einherjaras to be able to burn Loki in the dust and release their captive brothers and sisters. Crystal Arena is a manga series based on the strategic game Crystal Arena,