1girl alternate_costume anglerfish backlighting bangs black_footwear black_socks blue_coat blue_eyes blue_jacket boots closed_mouth coat commentary_request elbow_on_knee emblem frown girls_und_panzer green_shirt grey_hair ground_vehicle highres hugging_own_legs itsumi_erika jacket jacket_on_shoulders leaning_forward leg_up long_sleeves looking_at_viewer medium_hair military military_uniform military_vehicle miniskirt motor_vehicle on_vehicle ooarai_military_uniform ooarai_school_uniform panzerkampfwagen_iv partial_commentary pleated_skirt revision school_uniform shirt simple_background sitting skirt socks solo sutahiro_(donta) tank uniform white_background white_skirt zipper