1girl, ahoge, bandeau, barefoot, bikini, blue_eyes, blush, braid, breasts, cleavage, closed_mouth, feet_up, from_side, full_body, grey_hair, head_rest, in_water, kizuna_akari, large_breasts, long_hair, looking_at_viewer, lying, lying_on_water, on_stomach, partially_submerged, petenshi_(dr._vermilion), smile, solo, swimsuit, the_pose, twin_braids, very_long_hair, vocaloid, voiceroid, water