1girl, alternate_costume, artist_name, ass, ass_grab, back, birdy_cephon_altera, birdy_cephon_altera_(cosplay), blue_leotard, blue_thighhighs, breasts, brown_eyes, brown_hair, closed_mouth, cosplay, dutch_angle, from_behind, frown, girls_und_panzer, grabbing_own_ass, hair_ornament, hiyama_yuu_(wee259hiyama), leotard, long_sleeves, looking_at_viewer, looking_back, parted_bangs, revealing_clothes, sawa_azusa, short_hair, signature, simple_background, small_breasts, solo, standing, tetsuwan_birdy, tetsuwan_birdy_decode, thighhighs, white_background