2girls bikini black_bikini black_hair bracelet breasts brown_hair brown_nails cleavage contrapposto fingernails frilled_bikini frills front-tie_bikini_top front-tie_top green_eyes highres hoshi_san_3 jewelry large_breasts long_fingernails long_hair looking_at_viewer medium_breasts mole mole_on_breast mole_under_eye multiple_girls nail_polish original pale_skin parted_lips siblings side-tie_bikini_bottom sisters standing swimsuit translation_request yamifuka-san's_sister_(hoshi_san_3) yamifuka-san_(hoshi_san_3)