User blog comment:FrankieX98/The future members of the Issei's harem and peerage./@comment-2208155-20181206132915

One Lint fanart(I am not joking). The author invented her appearance:

https://www.deviantart.com/thedarkestnight51/art/Sigurd-Institution-Echoes-762872518

Anyway.. In 2 weeks we will know her true appearance.