1girl absurdres adjusting_hair bangs bikini black_bikini black_ribbon blue_eyes blush breasts butterfly_hair_ornament collarbone day go-toubun_no_hanayome hair_ornament hair_ribbon hairband halterneck hand_in_own_hair hand_on_own_thigh hand_up highres large_breasts long_hair looking_at_viewer nakano_nino navel nipples non-web_source open_mouth outdoors photoshop_(medium) red_hair ribbon ribbon-trimmed_bikini rouka_(akatyann) side-tie_bikini_bottom solo stomach string_bikini swimsuit untied untied_bikini very_long_hair wardrobe_malfunction water wet