Celestial Spirit King

Natsu interrupts the fiery battle between Igneel and Acnologia to ask his burning questions, but his former foster father gives him a task instead of answers: to steal the Book of END from Mard Geer. This prompts the leader of Tartaros to speed up Face's timeline, by having Kyoka form a living link with the activation device. Only Erza can stop her, but will she prevail against Kyoka's ultimate Etherious form?