1girl black_hair blue_archive blue_sailor_collar blue_serafuku breasts delinquent extra fingerless_gloves gloves gun hair_ornament hair_scrunchie halo high_ponytail highres large_breasts leaning_forward looking_at_viewer mask midriff mouth_mask no_bra oomura_karasu panties pantyshot sailor_collar school_uniform scrunchie serafuku sig_sauer sig_sauer_mpx skirt solo submachine_gun sukeban_(smg)_(blue_archive) underboob underwear weapon