Talk:Nezuko Kamado/@comment-4909028-20200322002541/@comment-35873778-20200322032624

She was 12 at the start of the series before Tanjiro's two-year training timeskip, if that's what you mean. If you're referring to the fact that her birthday has passed a few times in the real world, that is not considered to be canonical (otherwise every other character would be much older than they are noted to be).