Wait, is she wearing Fubuki's outfit? If yes, it qualifies for the seiyuu_connection tag.

EDIT:
Checking this picture which is official art drawn by the official artist shibafu_(glock23). Conclusion: yes, it's Fubuki's outfit.
Adding necessary tags.

I've always wondered how Hibiki/Verniy would sound like if Sumire did her voice instead of Suzaki Aya.