User blog comment:IamJakuhoRaikoben/Chapter 253: Let's Join Hands, Review./@comment-16344653-20111001140830/@comment-201.67.92.40-20111001142031

I'm not joking. Think about it: Zeref is a very old guy, but remains a youthful appearence. In these years, he could meet some girl and had a son with her.