yu-gi-oh!, yu-gi-oh!_zexal, mizuki_kotori_(yu-gi-oh!), 1girl, anus, bar_censor, breasts, censored, collarbone, completely_nude, female_masturbation, female_pubic_hair, fingering, foreshortening, greyscale, hair_bun, hair_ribbon, hand_to_own_mouth, looking_down, masturbation, monochrome, multicolored_hair, nipples, nude, pubic_hair, pussy, ribbon, short_hair, simple_background, single_hair_bun, small_breasts, solo, two-tone_hair, white_background