1girl, bare_shoulders, barefoot, bikini, blue_eyes, blush, boku_(@mangaboku), breasts, cleavage, collarbone, forehead, houkago_no_goumon_shoujo, knees_up, large_breasts, long_hair, long_sleeves, looking_at_viewer, lying, navel, nose_blush, on_back, pink_hair, skindentation, solo, swimsuit, thighs, tsuruse_riko, upside-down, very_long_hair, wavy_hair, white_background, white_bikini