As the story progress, it is revealed that the Natsu is actually Zeref's younger brother who died 400 yrs ago along with his father and mother and resurrected as E.N.D(Etherious Natsu Dragneel). Igneel, Natsu's foster father, teaches him sacred(Lost) dragon slayer magic and sent him in present(future for Natsu).
Natsu's Mother was the unnamed mother of Natsu Dragneel and Zeref Dragneel.
IgneelIgneel (イグニール Igunīru) was a Dragon known as The Fire Dragon (火竜 Karyū) and The Fire Dragon King (炎竜王 Enryūō). He was the foster father of Natsu Dragneel and the father of Ignia.
Natsu sees a memory of his life long ago, and he and his brother Zeref lived peacefully in a small village with their parents. Soon, a dragon attacks and kills Natsu and his parents. Zeref then researches methods to bring his brother back to life, and creates the Natsu we know today.
Mavis VermillionAugust was conceived of Zeref Dragneel and Mavis Vermillion some time after August of X697 through unknown circumstances, he was birthed by Precht, and had immense Magic Power, but was soon abandoned, and frequently stole as his means of survival.
The referee stands by his decision and the crowd also questions the referee as they begin to boo. The score changes to 9-4 in favor of Hisoka. Hisoka tricks Gon by making him look to his right and a large stone hits Gon, resulting in knockdown points which gave Hisoka the victory.
Gon and Killua apologize to Kite for the role they played in his death. Gon later heads out to meet up with Ging on the World Tree.
Ging chose to leave a 2-year-old Gon with his family since he wanted to continue being a full-time hunter. He devoted himself to the excavation and preservation of archaeological ruins, which probably consumes a lot of time and isn't a well-suited environment for raising a child.