to answer ur first question as of all chpts she has not once had penetrative sex with any of her subs. and none of them have really asked her for it either. she's always the one pegging/penetrating Them. she was in a flashback shown to have regular intercourse with her ex bf (but its a short scene) so its not like she hasnt or cant it's just not her Thing. tbh i just find it odd that she rarely even recieves oral sex from her subs but it seems her main way to get off is by dominating them which is fine too lol. but yeah if u want a femdom that will also have penetrative sex with their male sub now and then...well Sadistic Beauty and No Holes Barred have that. esp SB albeit most of it is with a guy who isnt /really/ a sub at all or her sub but he's not dominating her either? idk. just thought i'd put that out there 4 u lol.
oh also Lady and Maids is a femdom with a harem and sometimes she lets the guys fuck her (depending on the guy, she chose the right ones to do it if u ask me hahaha). as for whether Yeeun picks just One..no she hasnt picked ust one she still cycles thru her puppies. albeit a coupel have been taken out of the rotation now lol. the comic will be ending soon so if she does ever Pick One...well we'll know soon enough~

Does the FMC ever get to have sex with penetration? Does she ever get to choose one?