1girl artist_name black_eyes black_hair black_neckerchief blouse blush bob_(you-u-kai) breast_hold breasts character_name closed_mouth commentary crossed_arms dated english_text flying_sweatdrops girls_und_panzer glasses green_skirt haori happy_birthday head_tilt japanese_clothes jimiko light_frown long_sleeves looking_at_viewer medium_hair messy_hair motion_lines neckerchief octagram ooarai_school_uniform oryou_(girls_und_panzer) pleated_skirt red-framed_eyewear school_uniform semi-rimless_eyewear serafuku shirt short_ponytail signature simple_background skirt solo standing translated under-rim_eyewear upper_body white_background white_shirt