One day a gate appeared through which appeared angels like monsters thankfully archangel appeared & saved the earth & falls & through its DNA humanity developed espers ...After humanity's successful conquest of the Gate, peace has returned once again... However, the powerful psychic abilities of the Espers have become a double-edged sword for humanity, causing them great distress...thankfully they discovered guides, a muted form of humans due to the infected archangels blood ..the guides ability helped to calm espers ..A new opportunity arises for the 1st Esper "NO.00 Michael," who is facing imminent death.Adam William, a retired soldier & B rank guide who has always struggled with the relationship between Guides and Espers, decides to give Michael, the cause of his leg injury, a second chance & new name, "Eve," in the hope that he can live a normal life, blending in with humanity.