葉加瀬冬雪(SMC組イラコン衣装)
The third [[official alternate costume|costume]] of [[Nijisanji]]'s [[Hakase Fuyuki]], as seen in post #5945164. This costume is her [[SMC-gumi (nijisanji)|]] official unit costume and she is meant to be dressed as a demon girl.
hakase fuyuki (3rd costume)