>>51816
Depends on a bunch of factors
1) Is it a Jessica Rabbit situation where they seemingly just defy conventional reality, or are they 3Dified?
2) While it's implied in the question that any chosen character would have sex with me, are their libidos and personalities similar to as they are in their respective shows, or are they all equally turned into semen demons? Am I able to become a stand-in for an MC and experience the love he receives from a specific character? How much power do I have over her?
3) Is the sex indefinite or one-off, and if indefinite, does she exist outside of sex, and can our sex influence other downstream events, e.g. marriage, or is she just doomed to just materialize every time I'm horny and disappear after?
4) Does she possess other powers/abilities from her show in the real world, and can our sex influence other downstream events, e.g. marriage, or is she just doomed to be my sex toy for life?
5) Does she age like a human, or only if she canonically ages in-show, or not at all?
6) How, if at all, do other humans perceive her?
If it's a walking breathing 3D sex doll I'd probably go with Lucoa or Haruka, just ravage some giant tiddied monster and make the most of the third dimension. But I'll assume Jessica Rabbit.
Picrel version Bulma is my favorite of her many forms with that super sexy hair and stacked body, and she's also a genius engineer and generally fun person, but if she ages like she does in-show, that's a no-go. She'd also need to be reasonably loyal and past her boy-chasing phase, because I'm no Yamcha or Vegeta.
If I have to play it as close to the anime as possible, then Yamada is a natural pick, we're both horny frustrated virgins and I can make it a long term thing. Milly Thompson would be another one, she's not exactly pure sex, but she has a pure heart and would produce amazing sons thanks to her size and strength.
If it's basically a master-slave relationship and she's only having sex because she has to and has no ability to resist me, then I'd probably go with Junko. Total slut appeal with those handlebars and that uniform, and she's evil so it's not immoral to do whatever I want with her. Or maybe Dokuro-chan.
If I get MC energy, then Nadeko, no question, without the harem and all the other stuff that goes on in that world, I could fix her and we'd be totally crazy for each other. Kiwi would be really high up there as well
If it's one-off, then it's a choice between reenacting a specific scene, some hentai slut, or maybe some kind of monster/demon girl. If I wanted to just destroy my life with an experience that could never be replicated, it'd be Eri in her PJ's climbing into my bunkbed. A single lilim from Ishuzoku Reviewers should be manageable, and once it was over I'd probably be glad. Or maybe just Kirby or a Ditto for maximum goop and flexibility.