Who is Zeref to Natsu?

Zeref is Natsu's older brother from four hundred years ago. After Natsu died young, Zeref resurrected him as the powerful demon E.N.D. in hopes that Natsu would eventually become strong enough to kill him and end his cursed, immortal existence.

What happens to Zeref and Mavis?

Zeref and Mavis both die at the end of the conflict. When Mavis reciprocates Zeref's romantic love, their conflicting emotional ties activate their mutual immortality curses, allowing them to finally find peace together in death.

How is Acnologia defeated?

Acnologia is defeated through a two-part strategy. Wizards across the continent immobilize his physical body using the Fairy Sphere spell, while Natsu gathers the collective magic of all the Dragon Slayers to destroy Acnologia's spirit inside a space-time rift.

Does Natsu actually die?

No, Natsu does not die. Although he discovers he is a demon created by Zeref, he survives the major battles against both Zeref and Acnologia, returning safely to his friends and participating in guild activities a year later.

What is the final scene of the story?

The final scene shows Natsu and his core team of companions enthusiastically setting off together to embark on a legendary century-old guild mission, continuing their lifelong tradition of adventure and friendship.