User blog comment:Stone Roger/Natsu and Zeref have somekind of relation?/@comment-71.254.91.186-20111124023750/@comment-120.28.198.40-20120928170856

i agree because remember the fight between natsu and zeref at tenrou zeref use death wave but it didn't affect natsu only his scarf turn gray...if natsu's parents sealed away zeref they must put some kind of magic so that natsu could not be affected...or zeref magic wont work on dragon slayers sorry im clueless :) hope you understand