On Ranka, her partner, or both. Preference for testicles = yes, vagina = no, but I'm flexible on her partner's anatomy. Definitely down for her fucking a guy in the ass (Alto-kun? .....Brera?) as well.

Ranka and/or her partner are already pregnant (m-preg is iffy but I could be convinced still) and having sex. Could be early and just involving hormone-driven horniness or later on and dealing with the difficulties of sex while pregananant. Lactation welcome!

With another performer, or a fan, or a group of fans, or another performer AND they're both getting gangbanged by the lucky fans?

HEADLINE TEEN CELEBRITY CAUGHT BUYING A BUNCH OF COCAINE. Drunk sex, stimulant sex, aphrodisiacs out the wazoo or up the wazoo or every which way.

On her partner, and inside of any of her holes. Cervical penetration, stomach bulging, etc.

Nasty violence kinks. Pretty much anything brutal and bloody is welcome - whether or not it ends fatally. Ranka is probably on the receiving end, including mutual scenarios. Consensual on Ranka's part is the most interesting to me right now, possibly either going along with someone trying to off her, or else some kind of snuff performance, or being turned into some kind of human sex toy, or what have you.

...given that it's Ranka's heritage and all. Humanoid aliens or monsters, tentacle creatures or more exotic lifeforms, or just straight up bestiality with or without, uh, sufficient intelligence. Can very much result in pregnancy, eggnancy, etc.