1girl, aqua_hair, blue_eyes, blue_one-piece_swimsuit, breasts, feet_out_of_frame, hand_on_own_hip, horns, long_hair, looking_at_viewer, lum, medium_breasts, nanao_futaba, old_school_swimsuit, one-piece_swimsuit, oni_horns, partially_submerged, pointy_ears, school_swimsuit, smile, solo, swimsuit, urusei_yatsura, water