1girl 88_flak anti-aircraft_gun armband black_skirt bow bowtie brown_eyes brown_hair collared_shirt eyes_visible_through_hair german_text long_hair looking_at_viewer mecha_musume military miniskirt nano_(nanosize) original red_bow red_bowtie school_uniform ship shirt short_sleeves simple_background skirt solo sweater_vest translated watercraft white_background white_shirt world_war_ii