1girl armband ass_peek black_hair black_sailor_collar black_serafuku black_skirt black_wings blue_archive bow bowtie crop_top feathered_wings from_behind halo highres long_sleeves looking_at_viewer mashiro_(blue_archive) miniskirt miyai_(myai04) pleated_skirt purple_eyes red_bow red_bowtie safety_pin sailor_collar school_uniform serafuku short_hair simple_background skirt solo white_background wings