2girls, ass, bikini, blonde_hair, blue_eyes, blush, boots, christmas, hair_ornament, hairband, hat, heart, heterochromia, long_hair, looking_back, lying, multiple_girls, naughty_face, on_stomach, red_bikini, red_eyes, santa_bikini, santa_boots, santa_hat, side-tie_bikini, simple_background, smile, swimsuit, twintails, two_side_up, untied, untied_bikini, white_hair