4girls, ass, bikini, blush, breasts, brown_hair, cyborg, double_bun, from_behind, hair_bun, hair_ornament, hairpin, looking_at_viewer, mechanical_arms, mechanical_legs, multicolored_hair, multiple_girls, navel, ne_baozi, original, pants, pout, science_fiction, shapes, short_hair, small_breasts, standing, stomach, swimsuit, tail, two-tone_hair, white_hair, white_pants, writing