User blog comment:Natsu11/Zeref and Natsu?/@comment-3030647-20110419042232/@comment-174.95.227.86-20120424112112

but in one of the mangas zeref says he was never sealed away jus decided to stop killing by valuing humain life he even said all the keys to resurection were jus fairy tales and that he chose to stop untill the next era came around