1girl, back, back_focus, bad_pixiv_id, bannou_ippoutsukou, bikini, black_eyes, blush, breasts, earrings, from_behind, jewelry, large_breasts, looking_at_viewer, looking_back, medium_hair, original, outdoors, parted_lips, red_bikini, sideboob, sitting, solo, swimsuit, thighs, underboob, water, wet