As the story progresses, it is revealed that Ryo is a reincarnation of Dante when he was human. It turned out that Sodom and Gomorrah were a futuristic utopia under the rule of Satan. However, God, an energy-based being, came to Earth and demanded to use the people of Sodom as hosts for its power. When Satan and the people refuse to comply, God proceeds to use animals as vessels to destroy Sodom, an action that resulted in many of its occupants turned into their current demonic forms from being exposed to the residual energies. The survivors of Gomorrah, the last actual humans in existence, became the Satanists who allied themselves with the demons to fight God who took residence in apes and jump-started their evolution into the current human race. Near the end of the conflict that followed, as Satan both sealed himself within another dimension, Dante transferred his human body and soul to Judas Iscariot and Ryo Utsugi respectively to keep fighting after he was sealed. With Ryo finally regaining his memories as Dante while in Sodom and Gomorrah, he teams up with the cultists and plans to finally take vengeance upon God for his sins while releasing Satan.