Talk:Sylvia/@comment-2607:FB90:442C:7CCF:F1DC:DBC8:702A:85B5-20191113032349/@comment-24053170-20191114061351

Actually in this series they are.

This is confirmed in the Light Novel, Web Novel, Manga, and now the anime.

Sylvia has the attributes and traits of both a man and woman.

Not sure what more proof you need.