1girl bangs bare_shoulders bikini black_bikini black_hair blush breasts cleavage closed_mouth floral_print frilled_bikini frills grey_eyes hand_on_own_arm highres idolmaster idolmaster_shiny_colors kazano_hiori long_hair looking_at_viewer marinesnow medium_breasts mole mole_under_mouth ocean sky solo straight_hair strapless strapless_bikini swimsuit upper_body wet