1girl 3: bangs bare_shoulders bikini blue_bikini blue_hair blush breasts closed_mouth collarbone eyebrows_visible_through_hair furrowed_eyebrows kotonoha_aoi kurione_(zassou) long_hair navel one_side_up red_eyes shadow sitting small_breasts solo spread_legs straight_hair swimsuit thighs underboob very_long_hair voiceroid