User blog comment:Bato of the Heavy Iron Rock Hammer/What happens to the Alvarez Empire after FT's ending?/@comment-30230931-20170715185104/@comment-24102956-20170716062757

Even though, there WILL be consequences. Even if the bad guys are defeated, the world will not be suddenly peaceful and happy just because Zeref and Acnologia are gone.

Zeref created Alvarez and ruled it as Emperor. With him gone (and no heir or backup plan) and the vast majority of Alvarez armies and Spriggan 12 defeated and scattered, the empire will collapse into chaos and anarchy as many rising factions will fight over for control of Alakitasia, civil war will force thousands of refugees to flee to Ishgar.

Fairy Tail will deal another problem: a civil war of Alvarez after they took out Zeref.