If you're still accepting rarepairs for hcs etc, how about zayda/marina 👀
i did a drabble but i will do some hcs <3
a lot of marina's punishments are like. very much like what mox would dish out. exercise and work based punishments for when she doesn't do well in training. sexual "punishment" isn't quite punishment, but rather that zayda's at the whim of a bunch of sadomasochists
zayda is most definitely a hostage. theres a lot of threats to fuck up CD and the rest of skyflight, so she goes a long with the DR
weird age play bullshit from all the DR with Zayda, and Marina enjoys it. she likes "sharing" zayda. either with forced age regression, or just regular age play, they make zayda act like a teenager (or younger in marina's case. marina really loves babying her, forcing her into things like diapers and onesies/small, tight shirts, and making her suck on a pacifier/pacifier gag if she's not sucking on marina's tits. a lot of...gross watery meal replacement shakes in baby bottles for her when this is happening.) [i have a few thoughts about the other DR with zayda. yay]
coercion and blackmail in spades. a lot of zayda in compromising positions. a lot of videos of her saying embarrassing things (calling herself a cumslut, death rider property, etc).
on days where zayda isn't training for the ring (which are rare), she's being trained by marina in a few ways. blowjobs, anal, vaginal, fisting, foot worship, bootblacking...to name a few.