This one kinda puzzles me, a female having a harem is already an incredibly rare occurrence on here, but this is the first time I've seen a game with a female protag that can have a harem... but is a sub.
I don't mind games with submissive female protags, but to me it just seems odd that a submissive female character would be able to achieve having their own harem. I'm not even sure if it's an actual harem though or a poly relationship, if it's a poly relationship then it wouldn't really be surprising to me.
Anyways, enough of that, definitely an interesting game and I might check it out at some point, who knows?