Maybe the player's perspective is a little skewed, because of who Zaton is and what he can do, but it seems like women are generally submissive in this game.
I could imagine that "strong" characters like Kyra and Fangs only submit, if they're forced to, which might only be the case, when they're up against the stalker. The queen on the other hand is lesbian, I guess?
Shani I imagine enjoys some status, even though she's not a full stalker yet, because she's shown as a capable fighter. But she seems to prefer celibacy for some reason. The issue is, from what I can gather, that Zaton doesn't want her to be "claimed", but there doesn't seem to be a reason for her not claiming anybody herself.
I think Ain is the only female character shown to use somebody else for pleasure, when she casually mentions that she commanded Emilia to do it.
I wonder if the sex life in Zeta isn't ultimately dictated by the players' preferences. Because, for there supposedly being room for most types of sexual interaction, it seems a little one-sided for now. But I can imagine there'd be some backlash, if it was less one-sided.
For example, even though Ain is made to serve the guests at her house, I can't imagine her being treated in kind, when she's a guest at somebody else's house. Just like it was Igor and not Kateryna, who was getting served.