Although I think someone gave Kagerou the wrong gear...
Kagerou's probably wearing the bib that Kintaro is often shown with =3
In fact, the whole picture may be filled with references to Kintaro: his bib (Kagerou), him wrestling with bears as a child (Kuma) and the FGO event (Asagumo) =3
I already replied on your this author's bumping spree crusade today. Look it up. :P
Oh sorry, I post things and forget I posted them....my short term memory isn't exactly stellar due to certain circumstances.
Edit: Thankyous, I don't have her yet and I cba with farming for new fleet girls when I only have the Pearl Harbour Six and Kongou sisters over level 99 and a compulsion to kai/kai-ni every fleet girl I do have first. Using 4-2.