User blog comment:IamJakuhoRaikoben/Chapter 475: Dimaria Chronos Yesta, Review./@comment-3045936-20160229191407/@comment-4829046-20160301112707

@TwiDes5 There is a little genre in anime known as 'gender-bender'. Why is it used? To supply boobs to the audience mostly. As such, there is really no need to nitpick ;D If you did, you would find countless cases where names of deities are associated with a gender that opposes common mythology. This is the Mashima-verse, where you have a mixture of every mythology according to Mashima's fancy. Not like we got into the series for mythological accuracy anyway. XD

Also if you think about it, Chronos is just meant to be personification of time, not a god, and outside of references to Ananke, is gender-neutral for the most part. There are no real Greek stories surrounding Chronos as a character. Just associating the power of time is enough justification for the name.