Fairy tail. 100 years quest, 17

Purgatory, a transmutation of Ennie Signario's world, has separated Natsu and his Fairy Tail companions. They then discover that the target of the fake Duke, who wants to complete Athena II, is... Natsu? Meanwhile, Sabertooth has gone to visit Iruha, the prodigious alchemist, to obtain the Philosopher's Stone.