steven universe, amethyst (steven universe), stevonnie, simple background, white background, 16:10 aspect ratio, amethyst (personification), black hair, breasts, breast-to-breast, eyes closed, female, female only, functionally nude, futa on female, futa with female, grey hair, huge breasts, intersex, kiss, lactation, long hair, nude, purple skin, rubbing, semen, semen on ass, semen on body, semen on lower body, sex, topless, futanari, genderswap, genderswap (mtf)