WHAT DOES PROMO MECHASULTAN MEAN?

Struggling to system the revelation, Ayato panics and flees. He operates into his classmate Reika Mishima who prospects him to an area named "The Shrine of Xephon" in which a large egg slumbers. She starts to sing and an not known electricity awakens within just Ayato, connecting him to some getting termed RahXephon that breaks out from the egg. So