Talk:Nezuko Kamado/@comment-24053170-20191013084846/@comment-37375831-20191111032756

I think it explained it somewhere, but this is how I always thought it was:

Since human memories are usually erased if someone turns into a demon, I'd like to think it's not just memories, it's their whole logical processing.(which is clear since as you said she just learned to talk) So basically what I thought was that if a human turns into a demon they practically start from scratch when it comes to maturity in personality, and Nezuko would be a special case who slightly retains her personality from human form so it mixes in kinda with the demon condition (hence creating this cute little kiddish yet kind and caring personality). I think the reason why she looks more youthful as a demon than in human form is because the anime/manga simply wants to portray this "reset" since little kids are you know, cute as a whole.