Elric Mervinger, from a prestigious wizarding lineage, grapples with a medical ailment hindering his magic. Seeking a remedy, he encounters the demon Mephistopheles, aiming to exploit Elric's body to escape his draconic confinement. Unexpectedly, Elric assimilates Mephisto's essence, forging an inseparable connection between them. Now fused, can Elric harness this newfound strength to revive his family's prestige, or will he succumb to darker forces within?