1girl 9_no_seicho_nikki absurdres arm_up bangs bed_sheet black_hair black_mask black_serafuku blue_archive blunt_bangs breasts cleavage crop_top extra fingerless_gloves full_body gloves halo highres knee_up long_hair long_sleeves looking_at_viewer lying mask mask_pull medium_breasts mouth_mask neckerchief on_back pleated_skirt ponytail school_uniform serafuku skirt solo sukeban_(smg)_(blue_archive) white_neckerchief