User blog comment:Stone Roger/Natsu and Zeref have somekind of relation?/@comment-101.174.197.171-20140430072854/@comment-85.74.160.52-20140515111536

i believe that natsu came from the past with the eclipse programm and that he was zeref brother after all igneel found natsu alone in a forest. Maybe he was seperated by his brother in the forest and because he was too little he dont remember him. After zeref lost natsu i believe that he became immortal