Memento Mori is the 410th chapter of Hiro Mashima's Fairy Tail. Gray and Natsu continue their struggle against the Underworld King, but neither side is able to gain the upper hand. Finally tired of the fight, Mard explains the origins of Curses and their superiority to Magic, casting his ultimate Curse, Memento Mori, to erase the very existence of the Fairy Tail duo. With the battle apparently over, he says that all he needs to kill Zeref with the Curse is E.N.D.