Board Thread:General Discussion/@comment-180.183.8.182-20150722131359/@comment-26095489-20150723035948

Theyare imaginary substitube for lack of alternating for crew member's working on historical ships reimagine as shipgirls while using unreasonable "faries" as a dummy to fill in that void needed in an ideally functionable navy with Japanese kawaii culture. Since "fairies" are over used, dev start self copying their shipgirls design for new "fairies".

In a nutshell, don't think too much, or else you will lost it. Dev never give a clear standing as who are they, those are up to us to fill in the gap with our imagination.