User blog comment:Yuri Rozu/Fairy Tail Chapter 502 Mavis and Zera/@comment-193.190.73.129-20160920154139

Igneel left an egg inside of Natsu and has gonna squeeze it out now. Then, Acnologia will sense the new Dragon, barge in and rip DiMaria's head off.

But she won't die, since there are already three dead Spriggan Shields.

Natsu, Lucy and the new baby Dragon will run away from Acnologia.

Then Zeref will appear and he will tell Lucy that he's her brother-in-law and that he's the new baby Dragon's uncle.

Zeref and Acnologia will fight against eachother and Acnologia will die.

That's it, sorry for spoiling the end of the manga.