Yume is also used as a masculine name in Japanese. However, it's more common for females. Somee evidence for this is that Yume is also used as a a name element in unisex and masculine Japanese names, such as Yumeto. So, I think that the "Gender" of this name should be changes from "Feminine" to "Feminine & Masculine".Sources: https://www.names.org/n/yume/about https://forebears.io/x/forenames/yume