The Fall is an event that occurred in El Shaddai: Ascension of the Metatron.
Of the seven, Armaros lost his ability to say words while Semyaza was gravely injured and had to be confined in a life support system; he died sometime after. Arakiel is implied to have died as a result of the Fall. The remaining four survived without any visible injuries.
God had forbidden contact between humans and angels out of fear for the Nephilim. The Council of Elders were quick to decide on a second great flood, but God gave Enoch a chance to capture and retrieve the fallen angels and prevent The Flood.