1girl, alternate costume, backpack, bag, bangs, blonde hair, blue eyes, blurry, bob cut, bokeh, cherry blossoms, depth of field, fang, from side, girls und panzer, grey jacket, instrument, jacket, katyusha (girls und panzer), long sleeves, looking at viewer, nakasawa kei, open mouth, randoseru, recorder, short hair, smile, solo, standing, twitter username