1girl, ass, back, bad_pixiv_id, bikini, black_bow, bow, brown_eyes, brown_hair, from_behind, girls_und_panzer, grey_background, grin, hair_bow, half-closed_eyes, halterneck, kadotani_anzu, kneeling, long_hair, looking_at_viewer, looking_back, ngc20701, parted_bangs, red_bikini, side-tie_bikini_bottom, simple_background, smile, smirk, solo, swimsuit, twintails, v