maybe you can add a sex transformation for all of the characters, like, when you kiss a female character it would cause a transformation of your own customization based on sex and fertility. for example, take Talia. let's say that you can customize her standard form, but when you kiss her, it will cause her to transform into a form of your own choosing, like breast expansion, butt expansion, belly expansion, or both. and no not the transformation of another species, just the same species, like, the saiyans from dbz as an example of what I'm suggesting.